Câu hỏi: Their car does 150 miles ..... hour.

A. a

B. an

C. the

D. x

Câu 1: Alex is in Boston studying for .... MBA.

A. a

B. an

C. the

D. x

Câu 2: The children have ........ new teacher called Mr. Green.

A. a

B. an

C. the

D. x

Câu 3: The Mississippi river is in ........ United States of America.

A. a

B. an

C. the

D. x

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

A. a

B. an

C. the

D. x

Câu 5: What do you usually have for ......... breakfast?

A. a

B. an

C. the

D. x

Câu 6: There was .......... huge crowd of people outside the church.

A. a

B. an

C. the

D. x