I. 1...................you are interested in this film, don't go to see it at any cost. A.if B. Unless C. Because D. So 6. If you like that book, I will give it .................you as my present D. to A. for B. from C. at 7. If you live in this small town, you................earn much money
A. aren' B. couldn't C. can't D. didn't 8. If you have .....................money, you can travel abroad this summer D. a lots A. a lot of B. many C. lot of 9. If you are a student, you can get a discount .....................books A. on B. in C. at D. for 10. I won't go unless you ..............me the money back A. to pay B. paid C. paying D. pay II. simply -dirt-health- importance-quick-poison We are all destroying the earth. The seas and rivers are too (1).....dirt..............to swim in. There is so much smoke in the air that it is (2).................. to live in many of the world's cities. In one well-known city, for example, (3)........poison...... gases from cars poilute the air so much that policemen have to wear oxygen masks. We have cut down so many trees that there are now vast areas of wasteland all over the world. As a result, famers in parts of Africa can not grow enough to tat. in certain countrics in Asia there is so little rice. Moreover, we take enough care of the countryside. Wild animals are (4).....quick........ disappearing. For instance, igers are rare in India now because we have killed too many for them to survive. However, it isn't so (5) .....importance...........to talk about the problem. We must act now before it is too late to do anything about it. Join us now Save the Earth. This is too (6)......simply....... to ignore

I. 1...................you are interested in this film, don't go to see it at any cost.

A.if B. Unless C. Because D. So

6. If you like that book, I will give it .................you as my present

D. to A. for B. from C. at

7. If you live in this small town, you................earn much money

A. aren' B. couldn't C. can't D. didn't

8. If you have .....................money, you can travel abroad this summer

D. a lots A. a lot of B. many C. lot of

9. If you are a student, you can get a discount .....................books

A. on B. in C. at D. for

10. I won't go unless you ..............me the money back

A. to pay B. paid C. paying D. pay

II. simply --health- importance-quick-poison

We are all destroying the earth. The seas and rivers are too (1).........dirty..........to swim in. There is so much smoke in the air that it is (2).........unhealthy......... to live in many of the world's cities. In one well-known city, for example, (3)...... poisonous ........ gases from cars poilute the air so much that policemen have to wear oxygen masks. We have cut down so many trees that there are now vast areas of wasteland all over the world. As a result, famers in parts of Africa can not grow enough to tat. in certain countrics in Asia there is so little rice. Moreover, we take enough care of the countryside. Wild animals are (4).....quickly........ disappearing. For instance, igers are rare in India now because we have killed too many for them to survive. However, it isn't so (5) .....simply...........to talk about the problem. We must act now before it is too late to do anything about it. Join us now Save the Earth. This is too (6)......important....... to ignore

Complete the sentences with the verbs in parentheses

1. he'll be late for the bus if he ( not start) doesn't start at once
2. jim isn't at home right now. if he( be) were at home, i (visit) would visit him
4. fred failed the test because he didn't study. however, if he (study) had studied for the test, he (pass) would have passed it
5. if i (know) had known that there was a test yesterday, i (study) would have studied
6. if you have enough time, please (paint) paint the chair before you leave
7. i (accept) will accept if they invite me to the party
8. had we know your address, we ( write) would have written you a letter
9. if you(do) had done as i told you, you ( succeed) would have succeeded
10. if you come here in spring, you ( have) will have a chance to go to the village fair
11. i could understad the frech teacher if she ( speak) spoke more slowly
12. we could go for a drive if today (be) were sunday
13. if your mother ( buy) buys that motorcycle for you, will you be happy?
14. if i (see) had seen the movie last night, i (tell) would have told you about it
15. i will ring the bell once more. if he doesn't answer, i think he ( must go) must have gone out
16. if i make a prmise, i (keep) will keep it
17. he described the accident as if he ( see) had seen it himself
18. we're going to play tennis this afternoon if it (stop) stops raining
19. if i had asked you, would you (accept) have accepted?
20. if he (come) comes, please ( tell) tell me
21. you were late last night. if you (arrive) had arrived ten minutes earlier you (get) would have got a seat
22. if i (realize) had realized that the traffic light were red. i(stop) would have stopped

23. She won’t open the door unless she (know) knows who it is.

24.I (not lend) wouldn't have lent him the money if you (tell) told me that he never paid his debts

25.If I (can) could speak two languages last year, i (get) would have got a good job

26.If there (be) were no sunshine, we would all (die) die soon

27. You shouldn't believe it if you (not see) ​didn't see it with you own eyes

28. I (not do) wouldn't do that if I (be) were you

Exercise 1:

Rewrite:

1. I'll help you if you promise to try harder

-Unless.......you promise to try harder, I will not help you ......

2. When you press this button, this machine will start

- If.........you don't press this button, this machine will not start ......

3. Today is an awful day, so we can't go to the beach

- If.......today weren't an awaful day, we could go to the beach ........

4. It is raining, so we can't go out

- Unless.........it is raining, we can go out ........

5. If you don't rest yourself, you really will be ill

- Unless.........you don't rest yourself, you really will be ill .......

6. Unless he phones immediately, he won't get any information

- If.........he doesn't phone immediately, he won't get any information ......

7. We got lost because we didn't have a map

- If.......we had had a map, we wouldn't have got lost ....

8. You'd better learn English

- If I were.......you, I would learn English .......

9. If you don't start at once, you will be late

- Unless........you start at once, you will be late .......

10. Unless you water the tree every day, it will die

- If.....you don't water the tree everyday, it will die .....

Rewrite:

1. I'll help you if you promise to try harder

-Unless...............you don't promise to try harder,I'll help you.........

2. When you press this button, this machine will start

- If..........you press this button, this machine will start.................

3. Today is an awful day, so we can't go to the beach

- If........ Today weren't an awful day, so we could go to the beach.....

4. It is raining, so we can't go out

- Unless...........it were raining, we could go out.............................

5. If you don't rest yourself, you really will be ill

- Unless...........you rest yourself, you really will be ill..........

6. Unless he phones immediately, he won't get any information

- If......he doesn't phone immediately, he won't get any information...

7. We got lost because we didn't have a map

- If..........we had had a map,We wouldn't have got lost.........................

8. You'd better learn English

- If I were.............you,I would learn English....................

9. If you don't start at once, you will be late

- Unless................you start at once, you will be late.................

10. Unless you water the tree every day, it will die

- If................you don't water the tree every day, it will die.........

1. will crack

2. is

3. will help

4. will disappear 

5. won't go

6. is

7. provoke

8. won't be

9. will stay

10. will be

xin vía học giỏi

26.The bread was too stale for the children to eat

27.If he doesn't take these pills ,he won't be better

28.Because it rained heavily,we were late for school

29.Would you mind not playing your music so loudly?

30.In spite of not speaking Dutch,Bob decided to settle in Amsterdam 

If you aren't silent, you won't hear any words

If you are careless, you will break the vase

If it doesn't rain, they will go shopping

If they aren't interested in studying, they will not pass the test

1. I will be ....................... if she manages to sell that motorbike at a high price.

a. surprise b. surprised c. surprising d. to surprise

2. Unless you understand, I .......................explain it again to you.

a. am b. was c. will d. would

3. If you know where she lives, please let me .......................

a. know b. knew c. known d. to know

4. If he ....................... a student, he will get a discount.

a. is b. was c. were d. will be

5. ....................... you are interested in this film, don't go to see it at any cost.

a. If b. Unless c. Because d. So

6. If you like that book, I will give it ....................... you as my present.

a. for b. from c. at d. to

7. If you live in this small town, you ....................... earn much money.

a. aren't b. couldn't c. can't d. didn't

8. If you have ....................... money, you can travel abroad this summer.

a. a lot of b. many c. lot of d. a lots

9. If you are a student, you can get a discount ....................... books.

a. on b. in c. at d. for

10. I won't go unless you ....................... me the money back.

a. ro pay b. paid c. paying d. pay

1. I will be ....................... if she manages to sell that motorbike at a high price.

a. surprise b. surprised c. surprising d. to surprise

2. Unless you understand, I .......................explain it again to you.

a. am b. was c. will d. would

3. If you know where she lives, please let me .......................

a. know b. knew c. known d. to know

4. If he ....................... a student, he will get a discount.

a. is b. was c. were d. will be

5. ....................... you are interested in this film, don't go to see it at any cost.

a. If b. Unless c. Because d. So

6. If you like that book, I will give it ....................... you as my present.

a. for b. from c. at d. to

7. If you live in this small town, you ....................... earn much money.

a. aren't b. couldn't c. can't d. didn't

8. If you have ....................... money, you can travel abroad this summer.

a. a lot of b. many c. lot of d. a lots

9. If you are a student, you can get a discount ....................... books.

a. on b. in c. at d. for

10. I won't go unless you ....................... me the money back.

a. ro pay b. paid c. paying d. pay