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

A. a

B. an

C. the

D. x

Câu 1: Can you play ..... piano?

A. a

B. an

C. the

D. x

Câu 2: I want to introduce you to Sharon. She is ........ very nice person.

A. a

B. an

C. the

D. x

Câu 3: Children usually begin to go to ........ school at ........ age of six.

A. the, the

B. a, a

C. Ø, the

D. the,  a

Câu 4: Do you like ........ my new glasses?

A. a

B. an

C. the

D. x

Câu 5: Birds can fly in ........ sky.

A. an

B. the

C. x

D. a

Câu 6: He is ........ English.

A. a

B. an

C. x

D. the