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

A. A. fasten      

B. daddy     

C. backpack     

D. water

Câu 1:

Do you know what ___________ water pollution?

A. caused      

B. causing      

C. to cause      

D. causes

Câu 2: Choose the letter A, B, C or D the word that has the underlined part different from others.

A. A. survey      

B. surfing      

C. thursday     

D. student

Câu 3:

Why don’t we __________ old school objects for candies?

A. swap      

B. raise      

C. wrap      

D. recycle

Câu 4: Choose the letter A, B, C or D the word that has the underlined part different from others.

A. energy      

B. president      

C. electricity     

D. decorate

Câu 5:

You should put rubbish in the recycling ___________.

A. bin      

B. sea      

C. soil      

D. air

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