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

A. difficult

B. for

C. beings

D. fighting

Câu 1: 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 2: Mai and Lan have a row because they have misunderstood one another.

A. have

B. because

C. misunderstood

D. one another

Câu 3: Sex's education is instituted to help the student understandthe process of maturation, to eliminate anxieties related to development, to learn values, and to prevent disease.

A. sex’s education

B. understand

C. to eliminate anxieties

D. related

Câu 4: We have been making prepare for our final exammination for two months.

A. have been making

B. prepare

C. for

D. months

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: Dislike the gorilla, the male adult chimpanzee weighs under 200 pounds.

A. Dislike

B. male

C. under

D. pounds