Europe has achieved more in controlling the AIDS virus than Asia in the past ten years, _________ the number of people infected with the virus is going up sharply．
A．when B．that C．so that D．where
For most Americans, their 18th birthday the end of one part of their life and beginning of another．
A．predicts B．tells C．marks D．signs
It ______ heavily when he got back home for he was wet all over．
A．was raining B．must have been raining
C．must be raining D．rained
—Very little use was _____ the waste water in the past．
A．made of B．make from C．made up D．make into
—Miss Broun is very busy, isn’t she?
—So she is．She has greater responsibilities since she was promoted．
A．taken off B．taken after C．taken in D．taken on
—You can’t imagine ____ fantastic fun web chatting is．
—Really? But it may cause a lot of trouble sometimes．
A．what B．how C．why D．so
