1.Pollution (increase) will increase if we (use) use more oil and coal
2 The climate (change) will change if more trees (die) die.

3.If we (try) try to control pollution, it (be) will be expensive
5.If we (not control ) don't control pollution soon, it (be) will be too late.

6.If you need any more money i will lend you some.(you some)

7.You can go if you want to.

8. If the weather if fine tomorrow we will go for a picnic

9. Just ask me if you need any help

10. If anyone phones for me while i am out tell them i'll be back at 4 o'clock

11. go to bed now if you are tired

1. is

2. don't go

3. will start

4. are

5. don't arrive

1. is

2. don't go

3. will start

4. are

5. doesn't arrive

1. If we (run out) _______run out______ of oil, we (need) _____will need_______ other kinds of energy.

2. Pollution (increase )_____will increase_______ if we (use) ________use_______ more oil and coal.

3. If pollution (increase) ______increases__________ , more and more trees (die)______will die________

4. The climate (change)____will change_____________ if more trees (die) ___die_________

5. If we (try) _____try_______ to control pollution, it (be)________will be_______ expensive.

6. if we (not control)______don't control______ pollution soon, It (be) _______will be________ too late.

7. If you need any more money I (lend)_______will lend____ you some.

8. you can go if you (be) __are___ ready.

9. If the weather is fine tomorrow we ______will go________ for a picnic.

10. Just ask me if you (need)____need_____ any help.

11. It will be quicker if She (go) _____goes_________ by plane.

12. If she comes late again, she (lose) _____will lose______ her job.

13. I’ll give you some money if you (need) ___need______________ it.

14. If we (not go) ______don't go___ to their party next week, They ( be)____will be___ very angry.

15. I (be)_____would be_____ happy if you (stop) _____stopped______ smoking.

16. What will you do if you (be) _____were_________ the leader?(câu này thấy hơi lạ, để xem lại thử)

17 What (happen)___will happen_____ if you (not go) ______don't go_______ to work tomorrow?

18. She (stay)_____would stay_______ at home if it (rain) _______rained________

19. I’m sure she’ll understand the problem if you (tell )____tell_________ her.

20. If I (find) _____find_________ 100.000 note on the street, I (keep)____will keep_______ it.

1. If you........study........... ( study ) hard, you will pass the written examination.
2. If the weather ............is............( be ) fine, We will go for a picnic.
3. He ..........will write..............( write ) to you if he has time.
4. They........will have................ ( have ) a lot of fun if they come there.
5. If she.........doesn't hurry ......... ( not hurry ), she will miss the bus.
6. Mai asked Hoa how she____was_______ ( be)
7. He said he .......would go................( go ) to HCM city the following day.
8. She asked me if my school...........was............... ( be ) near there.
9. Maryam said she.........must............ ( must ) go then.

10. I asked her where she .......lived..............( live ).

I . put the verbs in brackets into the correct form

1. If we ( recycly ) ...recycle......... more , we will help the Earth

2. Factories ( not dump ) ..won't dump........... waste into rivers if the government fine them heavily

3. If people travel to work by bus , there ( he ) .will be............... fewer ear fumes

4. We ( save ) ...will save............ thousands of trees if we don't waste paper

5. If we use water carefully , more people ( have ) ..will have............ fresh water

6. If the factory ( continue ) ...continues.............. dumping poison into the lake all the fish and other aquatic animals will die

(Vừa nãy nhầm)

I . put the verbs in brackets into the correct form

1. If we ( recycly ) ..recycle.......... more , we will help the Earth

2. Factories ( not dump ) ..won't dump........... waste into rivers if the government fine them heavily

3. If people travel to work by bus , there ( he ) ...would be............. fewer ear fumes

4. We ( save ) ...will save............ thousands of trees if we don't waste paper

5. If we use water carefully , more people ( have ) ..will have............ fresh water

6. If the factory ( continue ) ........continues......... dumping poison into the lake all the fish and other aquatic animals will die

1. is

2. don't go away

3. will start

4. are

5. doesn't arrive

6. is

7. accepts

8. falls

9. comes

10. washes

Question I: put the verbs in brackets into the correct form.( câu điều kiện loại 1)

1. If we( recycle).......recycle..... more, we help the earth.

2. factories( not dump).......won't dump..........waster into rivers if the government fine them heavily.

3. if people travel to work by bus, there( be)..will be.... fewer car fumes.

4. we( save) ...will save.......thousands of trees if we don't waste paper.

6. if the factory( continue)........continues.... dumping poison into the lake, all the fish and other aquatic animals will die.

7. if we recycle mỏe, we( help).........will help............. the earth.

8. if people ( travel)...........travel........ to work by bus, there will be fewer car fumes.

9. we save tthusands of trees if we( not waste).................don't waste paper.

10. factories don't dump waste into rivers if the govenment( fine).......fine.......... them heavily.

Question II. put the verbs in brackets into the correct form.

1. if he( study)......studies........ harder, he can passan exam.

3. if you study harder, you(pass)......will pass............ the exam.

4. if you are kind to me, I(be)......will be............good to you.

5, if he( give)............gives............up smoking,as his doctor orders, he will be soon well again.

6. you( not pass)......will not pass........your driving test unless you drive more carefully.

7. he'll be ill if he( not stop).......does not stop...........worrying so much.

8. we'll go to the beach tomorrow if it( be)......is................... nice.

Question III. put the verbs in brackets into the correct form.( câu điều kiện loại 2)

1. if I were you, I(look)....would look.............. for a new place to live.

3. if there were fewer cars on the road, there(be).....would be................ less pollution.

4. if people really cared about the environment, they( not dump)...........wouldn't dump.......waste into the lake.

5. if there was no fresh water in the world, what(happen).....would happen........

6. if you (be)..........were.......the president, what would you do to help the environment?

1. If we( recycle).......recycle..... more, we help the earth.

2. factories( not dump).......won't dump..........waster into rivers if the government fine them heavily.

3. if people travel to work by bus, there( be)..will be.... fewer car fumes.

4. we( save) ...will save.......thousands of trees if we don't waste paper.

5. if we use water carefully, more people( have)..will have..fresh water.

6. if the factory( continue)........continues.... dumping poison into the lake, all the fish and other aquatic animals will die.

7. if we recycle mỏe, we( help).........will help............. the earth.

8. if people ( travel)...........travel........ to work by bus, there will be fewer car fumes.

9. we save tthusands of trees if we( not waste).................don't waste paper.

10. factories don't dump waste into rivers if the govenment( fine).......fine.......... them heavily.

Question II. put the verbs in brackets into the correct form.

1. if he( study)......studies........ harder, he can passan exam.

2. she may be late if she( not hurry)....does not hurry..............

3. if you study harder, you(pass)......will pass............ the exam.

4. if you are kind to me, I(be)......will be............good to you.

5, if he( give)............gives............up smoking,as his doctor orders, he will be soon well again.

6. you( not pass)......will not pass........your driving test unless you drive more carefully.

7. he'll be ill if he( not stop).......does not stop...........worrying so much.

8. we'll go to the beach tomorrow if it( be)......is................... nice.

Question III. put the verbs in brackets into the correct form.( câu điều kiện loại 2)

1. if I were you, I(look)....would look.............. for a new place to live.

2. if Lan wasn't ill, she( join)........would join.. out tree plating activity.

3. if there were fewer cars on the road, there(be).....would be................ less pollution.

4. if people really cared about the environment, they( not dump)...........wouldn't dump.......waste into the lake.

5. if there was no fresh water in the world, what(happen).....would happen........

6. if you (be)..........were.......the president, what would you do to help the environment?

1. If it (not pour)___doesn't pour__________ with rain tomorrow, we can (go)____go_________ on a picnic.

2. If James (start)_____starts________ to cook now, dinner (be)___will be__________ ready in one hour.

3. If Jane (not make)______doesn't make_____ it the meeting on time, her manager may (get)____get_______ very angry.

4. If they (be)_____are________ occupied this weekend, they can (not come)_______not come______ to my house for dinner.

5. You must (not leave)_____not leave________ the house unless I (allow)______allow_______ you to go.

6. Peter (just waste)___will just waste__________ his money if he (take)______takes_______ a course in this English center.

7. If he (be)______is_______ late, he can (not buy)___not buy__________ the tickets.

8. Unless she (pay)____pays_______ more attention to the lesson, she (fail)____will fail_______ the test.

9. It (be)______will be_______ late if you (not start)____don't start_________ your work now.

10.      My mother (not permit)_______won't permit______ me to go out unless I (promise)___promise__________ her to come back before 10.