Câu hỏi: We visited ...... Canada and ........ United States two years ago.

A. Ø - Ø

B. the - Ø

C. Ø - an

D. Ø - the

Câu 1: When was ....... telephone invented?

A. a

B. an

C. the

D. Ø

Câu 2: Do you need  ...... umbrella?

A. a

B. an

C. the

D. Ø

Câu 3: When was .......... computer invented?

A. a

B. an

C. the

D. Ø

Câu 4: .......... blind are ....... people who can't see anything.

A. The - a

B. A - Ø

C. The - Ø

D. The - the

Câu 5: Jill went to ......... hospital to see her friend.

A. a

B. an

C. the

D. Ø

Câu 6: I eat ......... banana every day.

A. a

B. an

C. the

D. Ø