In the global economy, a new drug for cancer, _________ it is discovered, will create many economic possibilities around the world.
A. whatever B. whoever C. wherever D. whichever
You can’t judge a book by its cover, ____________.
A. as the saying goes old B. goes as the old saying
C. as the old saying goes D. goes as old the saying
The door _______ open, no matter how hard she pushed.
A. shouldn‘t B. couldn't C. wouldn't D. mightn't
Anyone, once _______ positive for H7N9 flu virus, will receive free medical treatment from our government.
A. to be tested B. being tested C. tested D. to test
In much of the animal world, night is the time ______ for sleep—pure and simple.
A. set aside B. set down C. set off D. set up
----Are you sure you won't come for a drink with us?
----_________, if you insist.
A. Not at all B. It depends C. All right then D.I don't care
