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

A. my friends

B. at

C. while

D. other

Câu 1: It is very difficult for human beings fighting pollution.

A. difficult

B. for

C. beings

D. fighting

Câu 2: Mrs. Alien was concerned about me having to drive so far every day.

A. about

B. me having

C. so far

D. every day

Câu 3: The police is looking for the bank robbers who stole a large sum of money from the bank.

A. is

B. looking for

C. who

D. from

Câu 4: In very early times, people around the fire were entertained by storytellers with stories of heroes’ wonderful actions and victory.

A. times

B. around

C. ưere entertained

D. victory

Câu 5: In today's competitive markets, even small businesses had better to advertise on TV and radio in order to gain a share of the market.

A. today’s

B. to advertise

C. on

D. to gain

Câu 6: 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