Excuse me, six, Mr white has arrived, ________ he wait outside or just come in?

A．Shall

B．May

C．Could

D．Must

We were all shocked at the ________ news that he was in ________ prison．

A．the; the

B．the; a

C．/;/

D．the;/

－________ I didn't pass the English exam．

－________ next time, and you'll succeed．

A．Working hard

B．Work hard

C．To work hard

D．With hard work

The radiation amount of a mobile phone for two half-hour periods per day is equal to ________ to an X-ray for ten seconds．

A．expose

B．exposing

C．exposed

D．being exposed

________ good, this kind of fruit ________ very well in our city．

A．Tasted; is sold

B．Being tasted, sells

C．Tasting; sells

D．Tasting; is sold

As a result of destroying the forest, a large ________ of the desert ________ covered the land．

A．number; has

B．quantity; has

C．number; have

D．quantity; have

An online survey at sina．com suggested that most interviewers ________ limiting the time spent on the Internet would be fundamental ________ their eyesight．

A．say; to improving

B．say; to improve

C．said; for improving

D．said; to improving

It will be three days ________ he ________ back from his home town．

A．when; will come

B．after; will come

C．since; comes

D．before; comes

He came ________ finding the girl．

A．in the hope of

B．in hope of

C．in the hope that

D．in hope that

________ such heavy pollution already, it may now be too late to clean up the river．

A．Having suffered

B．Suffering

C．To suffer

D．Suffered