Câu hỏi: The students got the librarian_________ books for them.

A. buying

B. to buy

C. buy

D. bought

Câu 1: It is of great ________ to show your interest and politeness when you are having a job interview.

A. important

B. importance

C. importantly

D. unimportant

Câu 2: If I _______ just one year younger, I would be eligible for the scholarship.

A. am

B. will be

C. would be

D. were

Câu 3: If you eat too much, you _________ the price by putting on weight.

A. will pay

B. paid

C. would pay

D. were paying

Câu 4: _________, we couldn’t make out the gist of the passage.

A. Due to Romeo’s carefully explanations

B. Though carefully explained by Romeo

C. Carefully as Romeo explained

D. As Romeo carefully explained

Câu 5: Before becoming successful, Charles Kettering, former vice president of General Motors, was so poor that he has to use the hayloft of a barn as a laboratory.

A. as

B. so poor

C. has to

D. successful

Câu 6: Human beings are ________ greatest threat to survival of endangered species.

A. Ø

B. an

C. the

D. a