All of ??? sudden some passengers on_____board let out screams, running upstairs like ??? crazy.

A.a;/????????????? ????????????? ????????? B.the;the?????????? C.a;the????????????? ???????? D.the;/

??? seems to be a strong competition for students to enter a key university.?

A.It????????????? ? B.There ??????????? C.What????????????? ????????????? ????????????? ? D.That

The hotel in the town wasn’t particularly good, but I ??? in many worse hotels.

A.was staying?? B.stayed????????? C.would stay????????????? ? D.had stayed

I don’t think it ??? to stay up late in the night and sleep until midday the next day.

A.make a difference? B.makes good sense?

C.makes trouble?? D.make profit

??? to sunlight for too much time will do harm to your skin.

A.Exposed ????? B.Having exposed

C.Being exposed???? D.After being exposed

—Can those? at the back of the classroom hear me?—No problem, sir !

A. seat????????????? ????????????? B.seatingC.seated????????????? ????????????? ????????????? ? D.sit

The examination results suggested that I??? in poor health,so the doctor suggested that I ??? more exercises to improve it.

A.was;took????????????? B.was;take?????? C.be;took????????????? ????????????? ????? D.be;take

Mary often does some translation work to earn extra money, which ??? half of her income.

A.makes for????????????? B.counts on C.accounts for????????????? ????? D.consists in

His son is very naughty and has formed some bad habits.I think he should ??? .

A.cure them of him???????????????? B.cure him of them

C.cure them off him?????????????? D.cure him off them

Now there’s a system _________ the waste is disposed of using the principles of ecology.

A.when????????????? ????????????? ????????????? B.which????????? C.that????????????? ????????????? ????????????? ????? D.where