Câu hỏi: They came to visit us _____ my birthday.

A. at

B. on

C. to

D. of

Câu 1: We are her to provide you _____ the best service possible.

A. of

B. with

C. to

D. for

Câu 2: Please put your stuff away to make room ______ the new computer.

A. from

B. upon

C. about

D. for

Câu 3: There must be _______ least one vowel in every English word.

A. at

B. on

C. in

D. upon

Câu 4: She'll come home ______ April.

A. on

B. in

C. at

D. for

Câu 5: We were all fascinated ________ the things we saw.

A. on

B. in

C. by

D. for

Câu 6: Did you have a good time _____ Christmas?

A. at

B. in

C. for

D. on