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: Her outgoing character contrasts ______ with that of her sister.

A. thoroughly

B. fully

C. sharply

D. coolly

Câu 2: Learning Spanish isn’t so difficult once you ______.

A. get away with it

B. get off it

C. get down to it

D. get on it

Câu 3: I am not used to the cold weather here, so I need to have a heating system ______.

A. installed

B. serviced

C. developed

D. repaired

Câu 4: I have lived near the airport for so long now that I’ve grown ________ to the noise of the airplanes.

A. accustomed

B. unconscious

C.  familiar

D. aware

Câu 5: I may look half asleep, but I can assure you I am ______ awake.

A. broad

B. well

C. full

D. wide

Câu 6: We all believe that a happy marriage should be _______ mutual love.

A. confided in

B. concerned with

C. based on

D. obliged to