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: Harry has been admitted to ..........School of Medicine at .......... Midwestern university.

A. the/  X  

B. the / a

C. the/ the

D. X/ X

Câu 2: Phil can't go to .......... movies tonight because he has to write .......... essay.

A. X / the

B. the/  X

C. the/  the

D. X/  X

Câu 3: We watch television after .................. dinner.

A. a

B. an

C. the

D. x

Câu 4: Sorry, I can't find the number. I remember writing it on ............. back of an envelop.

A. a

B. an

C. the

D. x

Câu 5: .............. winter is usually cold, but .................. winter of this year is warm.

A. the/  X

B. X/  the

C. the/  the

D. X/  X

Câu 6: When you go to........... store, please buy........... bottle of ...........chocolate milk and........... dozen oranges.

A. a/  X/  X/ a

B. a/  the/  the/  a

C. the/  the/  X/  a

D. the/  a/  X/  a