Câu hỏi: ........ dancing is ......... more interesting activity than  .......... reading.

A. X/  X/  X

B. The/  a/  the

C. X/  a/  X

D. X/  the/  X

Câu 1: Where's ...... USB drive I lent you last week?

A. a

B. an

C. the

D. x

Câu 2: The Mississippi river is in ........ United States of America.

A. a

B. an

C. the

D. x

Câu 3: ..... recipe for ......... success is  .......... hard work.

A. The/  X/  X

B. The/  a/  the

C. X/  a/  X 

D. X/  the/  X

Câu 4: ......... European expert was invited to speak to the committee.

A. a

B. an

C. the

D. x

Câu 5: Carol's father works as ......... electrician.

A. a

B. an

C. the

D. x

Câu 6: It would help us if you gave ..... honest opinion.

A. a

B. an

C. the

D. x