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

A. because

B. let alone

C. instead of

D. so that

Câu 1: I believe that he was concerned ______ all those matters which his wife mentioned.

A. with

B. over

C. upon

D. above

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: The ______ to success is to be ready from the start.

A. key

B. response

C. agreement

D. demand

Câu 4: He was _______ when I had those problems and said whatever I did he would stand by me.

A. supportive

B. exciting

C. busy

D. dull

Câu 5: The computer allows us to work fast and _______.

A. efficiently

B. differently

C. variously

D. freshly

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