Câu hỏi: It is not easy to ________ our beauty when we get older and older.

A. develop

B. maintain

C. gain

D. collect

Câu 1: While I am waiting _______ my bus, I often listen _______ music.

A. on / at

B. for / to

C. toward / about

D. upon / in

Câu 2: I put your keys in the drawer _______ they cannot get lost.

A. because

B. let alone

C. instead of

D. so that

Câu 3: It's hard work looking _______ three children all day.

A. after

B. up

C. to

D. through

Câu 4: His ideas about marriage are quite different ______ mine.

A. with

B. from

C. for

D. on

Câu 5: You should _______ more attention to what your teacher explains.

A. make

B. get

C. set

D. pay

Câu 6: Some researchers have just _______ a survey of young people's points of view on contractual marriage.

A. sent

B. directed

C. managed

D. conducted