Câu hỏi:

If you turn _________ the lights when you don’t use it, you will save electricity.

A. on      

B. off      

C. up     

D. down

Câu 1: Choose the letter A, B, C or D the word that has the underlined part different from others.

A. energy     

B. environment     

C. deforestation     

D. exchange

Câu 2:

Let’s reduce the __________ of deforestation.

A. environment     

B. polluted      

C. effect      

D. disappear

Câu 3:

They use ________ plastic bottles to keep water.

A. refillable     

B. natural      

C. polluting      

D. charitable

Câu 4:

We can find noise pollution __________ most cities.

A. of      

B. on      

C. to      

D. in

Câu 5: Choose the letter A, B, C or D to complete the sentences

If we continue to deforest, our earth ___________ polluted.

A.  

B. is      

C. will be      

D. was

Câu 6: Choose the letter A, B, C or D the word that has the underlined part different from others.

A. A. recycle      

B. happy     

C. study     

D. windy