Câu hỏi: Scientists sent ............ expedition to ............ Mars during .......... 1990s.

A. an/  X/  the

B. an/  the/  the

C. X/  X/  the

D. X/  X/  X

Câu 1: ...........Lake Erie is one of five Great Lakes in ........... North America

A. a/  X/  the 

B. a/  the/  the

C. X/ X/ X

D. X/  X/  a

Câu 2: What did you eat for........... breakfast this morning.

A. a

B. an

C. the

D. x

Câu 3: Mr. Brown bought ..............new car ..................last week.

A. an/  X

B. a/  X

C. the/  the

D. X/  X

Câu 4: There are only ...........few seats left for …………… tonight's musical at ...........university.

A. a/  X/  the

B. a/  the/  the

C. X/ X/ X

D. X/  X/  a

Câu 5: ......... chair which you are sitting in is broken.

A. a

B. an

C. the

D. x

Câu 6: He usually travels to..................Philadelphia by.................. train.

A. the/  X

B. X/  the

C. the/  the

D. X/  X