Câu hỏi: Reading several books on that subject, Bill considered himself an expert.

A. Reading

B. books on

C. considered himself

D. expert

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

A. have

B. because

C. misunderstood

D. one another

Câu 2: To reduce pollution, we have to stop using many things that makes our life comfortable.

A. To reproduce pollution

B. using

C. makes

D. comfortable

Câu 3: It is very difficult for human beings fighting pollution.

A. difficult

B. for

C. beings

D. fighting

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: When she heard the news, she got so a shock that she dropped her glass.

A. heard

B. news

C. so

D. that

Câu 6: 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