Câu hỏi: The children have ........ new teacher called Mr. Green.

A. a

B. an

C. the

D. x

Câu 1: I like .... blue T-shirt over there better than ......... red one.

A. a/a

B. the/the

C. the/a

D. x/x

Câu 2: We need to protect ....... environment from pollution.

A. some

B. a

C. an

D. the

Câu 3: What do you usually have for ......... breakfast?

A. a

B. an

C. the

D. x

Câu 4: The Mississippi river is in ........ United States of America.

A. a

B. an

C. the

D. x

Câu 5: Julie talked for ......... hour about her school project.

A. a

B. an

C. the

D. x

Câu 6: There was .......... huge crowd of people outside the church.

A. a

B. an

C. the

D. x