1. If we ( keep on )  keep on using more and more motor vehicles, we (run out)  will run out of oil 

2. If we ( run out) run out  of oil, we (need) will need other kind of energy. 

3. If we (use) use more oil and coal, pollution (increase) will increase. 

4. If pollution (increase) increases, more and more trees (die)  will die. 

5. If more and more trees (die) die, the climate (change) will change 

6. If the climate change) changes, we meet) will meet  with natural disasters. 

7. If we( try) try to control pollution, it (be)will be very expensive 

9 If you (want) want to speak English fluently, you (must practice)it more often.

10 He (passes )the exam if he (study) hard. 

11. If he invites) me, I'll accept. 

12.What will you do (do) if she refuses your invitation?.

13.If I (be)am free, I'll visit you. 

14.He'll be late for school if he (not get)doesn't get up early. 

15.If he (read)reads in bad light, he'll ruin his eyes. 

16.If he (take)takes my advice, everything can go well. 

1/ C. are running --> will run
2/ B. recycling --> recycle
3/ C. sending --> send
4/ A. will be --> is
5/ C. made

1/ C. 
2/ B. 
3/ C. 
4/ A. 
5/ C. 

lol

1.    Unless we use more and more public vehicles, we will run out of oil soon.

à ______If we don't use more and more public vehicles, we will run out of oil soon. ___________________________________________________________

2.    Unless  we run out.of oil, we won’t need other kind of energy.

à ______If we don't run out.of oil, we won’t need other kind of energy. ___________________________________________________________

3.    Pollution will not  increase unless  we use more oil and coal.

à _______If we don't use more oil and coal, ollution will not increase ơ_________________________________________________________

4.    Unless pollution increase, more and more trees will die. (câu này sai nghĩa nek)

à _____If pollution increase, more and more trees will die. ________________________________________________________

5.    The climate will not change unless more and more trees die.

à _______If more and more trees don't die, the climate will not change ___________________________________________________________

6.    Unless  the climate change, wewon’t meet with natural disasters.

à _______If the climate doesn't change, we won’t meet with natural disasters. ______________________________________________________

7.    Unless we  try to control pollution, it won’t be very expensive.

________If we don't try to control pollution, it won’t be very expensive. ________________________________________________________

8.    I will not tell him this news unless I see him.

à ____If I don't see him, I will not tell him this news  _____________________________________________________

9.    Unless  you hurry, you will be late for school.

à ______If you don't hurry, you will be late for school.__________________________________________________

10. We will not be tired unless we walk to the market.

à _______If we don't walk to the market, we will not be tired __________________________________________________-

Bạnhãyviếtlạicáccâusau, và chia cácđộngtừtrongngoặctheothìđúng: present simple hoặc will/ won't.
a. If we (keep on)…keep on…..using more and more motor vehicles, we (run out)…will run out……… of oil.
b. If we (run out)…run out……… of oil, we (need)………will need……… other kind of energy.
c. If we (use)……use……. more oil and coal, pollution (increase)……will increase……..
d. If pollution (increase)……increases…………, more and more trees…will die…………. (die).
e. If more and more trees (die)…die………, the climate….will change. ….(change).
f. If the climate (change)……changes…, we (meet)……will meet…….with natural disasters.
g. If we (try)…try…..to control pollution, it (be)…will be……….. very expensive.
h. But if we (not control)……don't control………..pollution, it (be)……will be……… too late.

1.  Today we play more badly than we did yesterday, so we need to practise more.

more badly -> worse

2. I have never seen a most colourful kite than this one.    

most => more                

3. Maria and her sister talked loud than the other guests           

loud => louder          

4. John ran more fastly than all other competitors in the race.

more fastly => faster

5. Please speak clearer because I hardly understand the instruction.

cleaner => more clearly

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. sending -> to send

2. too -> so

3. by -> on

4. hardly -> hard

1. sending-> to send

2. that-> so

3. by-> on

4. heart-> heard

each sentences has one mistake. Underline the mistake and correct it. ........................

1. people will developed alternative sources of energy. ..........develope..............

2. solar power can be converted into electrical. ..........electricity.............

3.we should use energy economic so that we can save money. ......economically.........

4. the sun is a bundant sources of power. ............source................

5. by this time next week they live in other city. .......will have lived.........

6. many people believe that nature resources will never be used up. ............natural..........

7.people use energy to run machines, hot and cool their home. ..........heat.............

8. burning fossil fuels cause pollution. .........causes ............

9. scientist are work to find other kinds of energy for the future. .......working...........

10. students at school should learn how save energy. ............to save..........

each sentences has one mistake. Underline the mistake and correct it. ........................

1. people will developed alternative sources of energy. ...........DEVELOP............

2. solar power can be converted into electrical. ........POWERS...............

3.we should use energy economic so that we can save money. .....ECONOMIC ENERGY..........

4. the sun is a bundant sources of power. ...............SOURCE.............

5. by this time next week they live in other city. ..........WILL BE LIVING.....

6. many people believe that nature resources will never be used up. .........NATURAL.............

7.people use energy to run machines, hot and cool their home. .........HOMES..............

8. burnig fossil fuels cause pollution. ............CAUSE =CAUSES.........

9. scientist are work to find other kinds of energy for the future. ........WORK = WORKING..........

10. students at school should learn how save energy. .........TO SAVE..............

VII . Fill in the blank in the following passage with ONE suitable word from the box :

students ; bulbs ; coal ; off ; rural ; electricity ; natural ; energy ; save ; wastes .

With the development of science and technology , more and more (1)...energy...... is used every day . Nowadays , many (2)......rural....... areas in Vietnam have been electrified , and more (3)....... electricity....... is needed . If everyone (4) ......wastes........ energy , it will quickly run out , (5).....students ....... at school should learn how to (6).... save..... energy , for example , they should turn (7)......off......... the electric lights when they leave their classrooms .

Moreover , we may waste electricity at home if we use a lot of light (8)..... bulbs......... By not wasting energy , we will save a lot of (9) ......natural........... resources , such as (10)....coal...... and oil .

(1) energy

(2) rural

(3) electricity

(4) wastes

(5) students

(6) save

(7) off

(8) bulbs

(9) natural

(10) coal