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 will keep ____ eye on the baby when its father is away.

A. an

B. much

C. the

D. one

Câu 2: Birds can fly in _________ sky.

A. an

B. the

C. x

D. a

Câu 3: She needs ________ water. She is really thirsty.

A. a

B. an

C. the

D. x

Câu 4: I like ________ beautiful, brown coffee table in your living room. Where did you buy it?

A. a

B. an

C. the

D. x

Câu 5: Do you like _______ my new glasses?

A. a

B. an

C. the

D. x

Câu 6: Can you play _______ piano?

A. a

B. an

C. the

D. x