Câu hỏi: Canada is one of ......... biggest countries in the world.

A. a

B. an

C. the

D. x

Câu 1: She is ...... tallest girl in the school.

A. a

B. an

C. the

D. x

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 want to see ...... movie. I don't care which one we see. I just want to get out of the house tonight.

A. a

B. an

C. the

D. x

Câu 5: We only have ...... hour to complete the test.

A. a

B. an

C. x

D. the

Câu 6: All work had to be done by ...... hand when there were no modern machines.

A. an

B. the

C. x

D. a