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

A. sent

B. directed

C. managed

D. conducted

Câu 2: It's hard work looking _______ three children all day.

A. after

B. up

C. to

D. through

Câu 3: I put your keys in the drawer _______ they cannot get lost.

A. because

B. let alone

C. instead of

D. so that

Câu 4: Professor Berg was very interested in the diversity of cultures all over the world. (Mark the letter A, B, C, or D to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions.)

A. variety

B. changes

C. conservation

D. number

Câu 5: Affected by the Western cultures, Vietnamese young people's attitudes _______ love and marriage have dramatically changed.

A. for

B. with

C. through

D. towards

Câu 6: He was very respectful at home and _______ to his parents.

A.  responsible

B. caring

C. obedient

D. lovely