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

A. on / at

B. for / to

C. toward / about

D. upon / in

Câu 1: I put your keys in the drawer _______ they cannot get lost.

A. because

B. let alone

C. instead of

D. so that

Câu 2: He was determined to give his family a secure and solid _______.

A. base

B. floor

C. basement

D. ground

Câu 3: 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 4: His ideas about marriage are quite different ______ mine.

A. with

B. from

C. for

D. on

Câu 5: Socially, the married _______ is thought to be the basic unit of society.

A. couple

B. pair

C. twins

D. double

Câu 6: A curriculum that ignores ethnic tensions, racial antagonisms, cultural _______ and religious differences is pot relevant.

A. diversity

B. contacts

C. barriers

D. levels