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

A. of

B. with

C. to

D. for

Câu 1: John F. Kenedy was the first President to be born ____ the twentieth century.

A. in

B. on

C. at

D. up

Câu 2: The government is trying to make the country safe _____ terrorist attacks.

A. from

B. of

C. at

D. for

Câu 3: I like to shower in the morning, but my roommate likes to shower ____ night.

A. at

B. on

C. in

D. with

Câu 4: Helen had said goodbye to everybody in the class _____ she left for the hometown.

A. after

B. before

C. and

D. for

Câu 5: The children are really excited _____ their summer vacation.

A. on

B. of

C. to

D. about

Câu 6: John missed a lot of lessons. He was ill _____ January to March.

A. on

B. from

C. of

D. in