Câu hỏi:

We are trying to __________ the president to the party.

A. pollute      

B. exchange      

C. invite      

D. cause

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

A. A. charity     

B. natural      

C. classmate      

D. exchange

Câu 2:

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

A. swap      

B. raise      

C. wrap      

D. recycle

Câu 3: Choose the letter A, B, C or D the word that has the underlined part different from others.

A. refillable      

B. environment     

C. bin

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

A. A. reuse      

B. refill      

C. recycle     

D. level

Câu 6:

Do you know what ___________ water pollution?

A. caused      

B. causing      

C. to cause      

D. causes