Câu hỏi: 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 1: It is not easy to ________ our beauty when we get older and older.

A. develop

B. maintain

C. gain

D. collect

Câu 2: It is thought that traditional marriage _______ are important basis of limiting divorce rates.

A. appearances

B. records

C. responses

D. values

Câu 3: He was very respectful at home and _______ to his parents.

A.  responsible

B. caring

C. obedient

D. lovely

Câu 4: I put your keys in the drawer _______ they cannot get lost.

A. because

B. let alone

C. instead of

D. so that

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

A. make

B. get

C. set

D. pay

Câu 6: Socially, the married _______ is thought to be the basic unit of society.

A. couple

B. pair

C. twins

D. double