Yuan Longping makes ____ possible to produce more crops in the same fields with this special strain of rice
They looked at each other, ______.
Mr. Smith, _______ of the ______ speech, started to read a novel.
Look, what a dirty classroom we have got! It really wants ______.
It is high time, I think, that you got down to ______ something in class.
I've never seen a Shakespeare's play ______ so wonderfully.