Câu hỏi: It is very difficult for human beings fighting pollution.

A. difficult

B. for

C. beings

D. fighting

Câu 1: We have been making prepare for our final exammination for two months.

A. have been making

B. prepare

C. for

D. months

Câu 2: Aristotle, the famous Greek philosopher, believed that the brain was an organ that cooled a heart.

A. the famous

B. the brain

C. an organ

D. a heart

Câu 3: In a federal form of government like that of the United States, power is divided between the legislative, executive, and judicial branches.

A. like

B. that of the United States

C. is divided

D. between

Câu 4: Anyone reproducing copyrighted works without permission of the holders of the copyrights are breaking the law.

A. reproducing

B. are

C. breaking

D. the law

Câu 5: Some of my friends are good at English while other are good at Mathematics.

A. my friends

B. at

C. while

D. other

Câu 6: Did you say that you will have a lot of things to do the following week?

A. that

B. will

C. to do

D. the following