Look, what a dirty classroom we have got! It really wants ______.
A．clean B．cleaned C．cleaning D．to clean
It is high time, I think, that you got down to ______ something in class.
A．do B．did C．doing D．does
I've never seen a Shakespeare's play ______ so wonderfully.
A．performing B．performed C．perform D．is performing
Tom's shoes looked just the same as Mike's, but they cost _______ his.
A．as much twice B．twice as much as C．much as twice as D．as twice much as
Mother, together with her children , ______ to the hospital.
A．were sent B．are sent C．was sent D．have been sent
The war made ______ impossible for the scientist to go on with his research.
A．him B．it C．this D．that
