Câu hỏi: This book is based _____ part on fact.

A. in

B. upon

C. at

D. on

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

A. of

B. with

C. to

D. for

Câu 2: The children are really excited _____ their summer vacation.

A. on

B. of

C. to

D. about

Câu 3: She'll come home ______ April.

A. on

B. in

C. at

D. for

Câu 4: She returned ____ China after spending much time abroad.

A. in

B. from

C. to

D. at

Câu 5: He has been absent ____ school very often lately.

A. from

B. on

C. in

D. with

Câu 6: We were all fascinated ________ the things we saw.

A. on

B. in

C. by

D. for