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

A. A. appear     

B. hear      

C. bear     

D. ear

Câu 1:

They use ________ plastic bottles to keep water.

A. refillable     

B. natural      

C. polluting      

D. charitable

Câu 2:

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

A. on      

B. off      

C. up     

D. down

Câu 3:

Do you know what ___________ water pollution?

A. caused      

B. causing      

C. to cause      

D. causes

Câu 4:

Water is used to generate __________.

A.  

B. electricity      

C. money      

D. deforestation

Câu 5: 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

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

A. A. polluted      

B. uniform      

C. reduce      

D. reuse