Don’t throw away the waste paper. It needs so that it can be reused.
She devoted as much time as she could ____________ others.
I don’t doubt ____________ he will come.
David has brain. In fact, I don’t think that anyone in the class has _____________ IQ.
--What about travelling during the summer holidays?--- _____________ It can relax us and open our eyes.A. Why not?B. What for?C. I think so.
---Must I finish the homework now?---No, you ________. You can do it after dinner.A. can’t B. needn’t C. mustn’t