---What do you think of the book? ---Oh,excellent. It's worth____a second time. A. to read B.to be read C, reading D,being read
---May I go to the cinema this evening? ---____. We should do the voluntary work in the nursing house.
—Don’t you know Li Ming will go abroad? —____, not until you ____me.
It is dark outside, so please____ your step while going down the stairs.
We can’t help you ____ you tell us what’s wrong.
I’m not a little hungry now, but I____ enough at lunch.