Câu hỏi: Mike came across his old friend - Maria while he _______ along the street.

A. had walked

B. would walk

C. was walking

D. walked

Câu 1: _________, 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 2: Jane never gives her mother a hand in housework _________ she has a lot of free time.

A. although

B. since

C. in spite of

D. because of

Câu 3: The students got the librarian_________ books for them.

A. buying

B. to buy

C. buy

D. bought

Câu 4: Air pollution, together with littering, are causing many problems in our large, industrial cities today.

A. are

B. industrial

C. problems

D. with

Câu 5: 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 6: I and Kenny______ pen pal friends since I_______ Singapore.

A. are/ visit

B. were/ have visited

C. were/ visited

D. have been/ visited