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

A. x

B. a

C. the

D. an

Câu 1: Quick! Someone call ....... police. I need help right now.

A. a

B. an

C. the

D. x

Câu 2: Canada is one of ......... biggest countries in the world.

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: Birds can fly in ........ sky.

A. an

B. the

C. x

D. a

Câu 5: ......... Hyde Park is a very large park in central London.

A. a

B. an

C. x

D. the

Câu 6: I want to have ....... apple for ........ lunch.

A. a, the

B. an, Ø

C. the, Ø

D. Ø, Ø