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

A. a

B. an

C. the

D. x

Câu 1: ......... Hyde Park is a very large park in central London.

A. a

B. an

C. x

D. the

Câu 2: Birds can fly in ........ sky.

A. an

B. the

C. x

D. a

Câu 3: Sam is  ...... man to speak at the conference tomorrow.

A. x

B. a

C. the

D. an

Câu 4: She needs  ........ water. She is really thirsty.

A. a

B. an

C. the

D. x

Câu 5: It is fun to learn English on ....... computer.

A. a

B. an

C. x

D. the

Câu 6: Children usually begin to go to ........ school at ........ age of six.

A. the, the

B. a, a

C. Ø, the

D. the,  a