Only when something gets lost _____________.
A. can you realize how important it is to you
B. how important you can realize it is to you
C. you can realize how important it is to you
D. can you realize how important is it to you
She’s developing into someone who’s going to become very poor and require ______.
A. looked after B. being looked after
C. looking after D. to look after
With more forests being destroyed, huge quantities of good earth _______ each year.
A. is washing away B. is being washed away
C. are being washed away D. are washing away
This event not only raised _______ of world hunger, but also raised lots of money to help starving children.
A. information B. knowledge C. instruction D. awareness
____________ you may be right, I can’t altogether agree.
A. While B. As C. If D. Since
The emergency required that all the tasks _____ at least two days ahead of time．
A．to complete B．should complete C．be completed Dshould have been completed
