—Have you seen the TV play My Ugly Mother? —Yes,it’s well worth . A.see B.to see C.seeing
—Could you help me carry this box? It’s too heavy. —__________.
People should __________ from __________ down the trees to protect the earth.
I don’t think you can finish the work in such a short time, __________?
__________ useful advice he has given us!
I didn’t know when he _____ back. He said he would call me when he _____ home.