Câu hỏi: Scientists warn that many of the world’s great cities are _______ flooding.

A. being

B. at risk

C. in danger of

D. endangered

Câu 1: We all believe that a happy marriage should be _______ mutual love.

A. confided in

B. concerned with

C. based on

D. obliged to

Câu 2: Mary is very_______ and caring. - I think she would make a good nurse.

A. mischievous

B. effect

C. efficient

D. disobedient

Câu 3: The operation of the newly constructed plants is likely to lead to _________ environmental consequences.

A. far-reaching

B. far-off

C. far-gone

D. far-flung

Câu 4: All applicants must ________ their university transcript and two reference letters to be considered for this job.

A. permit

B. omit

C. submit

D. admit

Câu 5: We arranged to meet at the station, but she didn’t _______.

A. get through

B. turn up

C. walk out

D. wait on

Câu 6: The computer has had an enormous _________ on the way we work.

A. alteration

B. change

C. impression

D. influence