Experts have been warning ___ of the health risks caused by passive smoking.
A.at a time B.at one time
C.for some time D.for the time
After graduation she reached a point in her career ___ she needed to decide what to do.
A.that B.what
C.which D.where
—I have got a headache.
—No wonder.You ___ in front of that computer too long.
A.work B.are working
C.have been working D.worked
The melon the Smiths served at dinner would have tasted ___ if it had been put in the fridge for a little while.
A.good B.better
C.best D.well
He was told that it would be at least three more months ______he could recover and return to work.
A.when B.before
C.since D.that
—What do you think of the performance today?
—Great!____ but a musical genius could perform so successfully.
A.All B.None
C.Anybody D.Everybody
