1.The rest of the water ____unfit to drink,please eat the apples.

A.is         B.has been          CHOOSE    A  OR　B?

2.Is the sentence''Do you think it's right that we teachers contribute our   knowledge to the students?''right?

3.A modern city has been set up in ___was a wasteland ten years ago.

Awhat    Bwhich   Cthat      Dwhere

4I know nothing about the meeting ___it will be held next week.

Aexcept    Bexcept where