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

A. a

B. an

C. the

D. x

Câu 1: There was .......... huge crowd of people outside the church.

A. a

B. an

C. the

D. x

Câu 2: We often go to school by ........ bicycle.

A. some

B. a

C. an

D. the

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: Ben has ........... terrible headache.

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

A. a

B. an

C. the

D. x