................. the air is cleaner, people will have less breathing problems

A. Unless            B. When                C. If                 D. Because

chuc ban hoc tot nha

.................. the air is cleaner, people will have less breathing problems

A. Unless            B. When                C. If                  D. Because

C nhé bạn

B

C

A

1 ý B 2 ý C câu 3 ý A

Rearrange the words and phrases to make meaningful sentences.
1. when / turn off / don't / you / them / the lights / use
=>.....Turn off the lights when you don't use them.
2. students / greener place / if / the school yard / will / plant / in / a / more trees / their school / be
=>..The school yard will be a greener place if students plant more trees in their school.
3. the air / will have / if / we / have / breathing problems / cleaner / is / less
=> We will have breathing problems if the air is less cleaner.
4. children / able to / robots / help / do / teaching / will / their homework / be
=> Robots will be able to help teaching chidren their homework.

I.Choose the best options to complete the sentencces

1.She ....... a picnic with friends next week.

A.has B.will have C.has had D.will has

2.People ....... the environment if they ....... or cycle more

A.help-will walk B.help-walk C.will help walk

3.If plants ...... more, we ....... enough food to feed everyone.

A.die-will have B.die-won't have C.will die-won't have D.won't die-won't have

4.She ....... until midnight tomorrow because it is important

A.will not work B.might work C.will work D.can work

5.If Mai ........ trees and flowers in her garden, it ........ greenner and more beautiful

A.grow-will be B.grows-will be C.grow-won't be D.-won't be

6.I.......... my son for a a long time. He hasn't visited my since May

A.have seen B.hasn't seen C.haven't seen D.has seen

7. If the river is.........., many fishes.....

A.polluted-will die B.polluted-dies C.is polluted-dies D.is polluted-will die

8.If people ....... the rubbish, it ...... harmful smoke .

A.burn-will produce B.burns-will produce C.will burn-produce D.will burn-produces

I.Choose the best options to complete the sentencces

1.She ....... a picnic with friends next week.

A.has B.will have C.has had D.will has

2.People ....... the environment if they ....... or cycle more

A.help-will walk B.help-walk C.will help walk

3.If plants ...... more, we ....... enough food to feed everyone.

A.die-will have B.die-won't have C.will die-won't have D.won't die-won't have

4.She ....... until midnight tomorrow because it is important

A.will not work B.might work C.will work D.can work

5.If Mai ........ trees and flowers in her garden, it ........ greenner and more beautiful

A.grow-will be B.grows-will be C.grow-won't be D.-won't be

6.I.......... my son for a a long time. He hasn't visited my since May

A.have seen B.hasn't seen C.haven't seen D.has seen

7. If the river is.........., many fishes.....

A.polluted-will die B.polluted-dies C.is polluted-dies D.is polluted-will die

8.If people ....... the rubbish, it ...... harmful smoke .

A.burn-will produce B.burns-will produce C.will burn-produce D.will burn-produces

I.Choose the best options to complete the sentencces

1.She ....... a picnic with friends next week.

A.has B.will have C.has had D.will has

2.People ....... the environment if they ....... or cycle more

A.help-will walk B.help-walk C.will help walk

3.If plants ...... more, we ....... enough food to feed everyone.

A.die-will have B.die-won't have C.will die-won't have D.won't die-won't have

4.She ....... until midnight tomorrow because it is important

A.will not work B.might work C.will work D.can work

5.If Mai ........ trees and flowers in her garden, it ........ greenner and more beautiful

A.grow-will be B.grows-will be C.grow-won't be D.-won't be

6.I.......... my son for a a long time. He hasn't visited my since May

A.have seen B.hasn't seen C.haven't seen D.has seen

7. If the river is.........., many fishes.....

A.polluted-will die B.polluted-dies C.is polluted-dies D.is polluted-will die

8.If people ....... the rubbish, it ...... harmful smoke .

A.burn-will produce B.burns-will produce C.will burn-produce D.will burn-produces

1 Once non - renewable energy sources are used...... they are gone forever

A.Out     B.Up     C.For         D.Off

2 What .... if carbon dioxide levels continue to increase ?

A. happen         B.Will happen    C.Will be happened   D.Will be happening

1. B
2. B
chúc e học tốt!

1.B

2.B

1. If people can................... wastes, they will save a lot of money.

A. rebuild B. reduce C. reuse D. use

2. In the future, we won't go on holiday to the beach but we............ go on holiday to the Moon.

A. must B.can't C. might D. won't

3............the air is cleaner; people will have less breathing problems.

A. Unless B. When C. If D. Because

4. I might have a smartphone....................... the Internet.

A. surf B. surfing C. to surf D. to surfing

5. '' What can we do ......... air pollution?

A. reducing B. to reduce C. reduce D. to reducing

GOOD LUCKY

1. If people can................... wastes, they will save a lot of money.

A. rebuild B. reduce C. reuse D. use

2. In the future, we won't go on holiday to the beach but we............ go on holiday to the Moon.

A. must B.can't C. might D. won't

3............the air is cleaner; people will have less breathing problems.

A. Unless B. When C. If D. Because

4. I might have a smartphone....................... the Internet.

A. surf B. surfing C. to surf D. to surfing

5. '' What can we do ......... air pollution?

A. reducing B. to reduce C. reduce D. to reducing

1. If people can................... wastes, they will save a lot of money.

A. rebuild     B. reduce     C. reuse     D. use

2. In the future, we won't go on holiday to the beach but we............ go on holiday to the Moon.

A. must     B.can't     C. might     D. won't

3............the air is cleaner; people will have less breathing problems.

A. Unless     B. When     C. If     D. Because

4. I might have a smartphone....................... the Internet.

A. surf     B. surfing     C. to surf      D. to surfing

5. '' What can we do ......... air pollution?

A. reducing     B. to reduce     C. reduce     D. to reducing

    bạn học tốt nha

II. Choose the correct answer A, B, C or D to complete the passage. 

People need to breathe. If they don’t breathe, they (1) ____________ die. But how clean is the air people breathe? If they breathe (2) ___________ air, they will have breathing problems. Plants and animals need (3) __________ air too. A lot of the things in our lives create harmful gases and (4) _________the air dirty, like cars, motorbikes, and factories. Dirty air is called polluted air. Air pollution can also make our Earth warmer. 

1. A. won’t B. are C. must D. will

2. A. clean B. fresh C. dirty D. cleaner

3. A. clean B. safe C. dirty D. polluted

4. A. make B. get C. give D. made

1.Thousands of cranes____

a.will be returned the spring

b.will return the spring

c.will be returned in the spring

d.will return in the spring

2.These boxes____with care.

a.should have handled

b.should be handling

c.should handle

d.should be handled

3.The residents____that there is a crocodile at large in the area.

a.must be warned

b.must have warned

c.may warned

d.may be warning

1.Thousands of cranes____

a.will be returned the spring

b.will return the spring

c.will be returned in the spring

d.will return in the spring

2.These boxes____with care.

a.should have handled

b.should be handling

c.should handle

d.should be handled

3.The residents____that there is a crocodile at large in the area.

a.must be warned

b.must have warned

c.may warned

d.may be warning

People need to breathe . If they don't breathe, they ..will...die. But how clean is the air people breathe?If they breathe ...dirty..air , they will have breathing problems. Plants and animals ...need....clean air, too. A lot of the things ..in.. our lives create harmful gases and...make....the air dirty , like cars, motorbikes and factories.Dirty air is called "...Polluted..air:. Air pollution can also make our earth warmer . The problem of air pollution started with the burning of coal in...houses... and factories