Câu hỏi: All work had to be done by ...... hand when there were no modern machines.

A. an

B. the

C. x

D. a

Câu 1: I  like ......... beautiful, brown coffee table in your living room. Where did you buy it?

A. a

B. an

C. the

D. x

Câu 2: She needs  ........ water. She is really thirsty.

A. a

B. an

C. the

D. x

Câu 3: Have you ever been to ........ British Museum.

A. a

B. an

C. x

D. the

Câu 4: Sam is  ...... man to speak at the conference tomorrow.

A. x

B. a

C. the

D. an

Câu 5: Finally we got to .......... house where our grandfather and grandmother had once lived.

A. the

B. an

C. x

D. an

Câu 6: Birds can fly in ........ sky.

A. an

B. the

C. x

D. a