用所给词的适当形式填空

1. How many______ (email ) do you get?

2. He is always the ______ (one ) one to get to school.

3. Thanks for giving me some ______ (information).

4. Sometimes my father ______ (buy) tickets on the Internet.

5. Do they ______ (go) online in the evening?

6. Tom and Linda are the old man's ______ (grandchild).

7. Jim             ______ (not have) breakfast at home.

8. Can you ______ (open) a new document?

9. The little boy ______ (switch) on the lights and goes into the room.

10. I want              ______ (close) the window.

住宅建筑的安全出口数量与建筑单元每层的建筑面积和户门到安全出口的距离有关，一般要求住宅单元每层的安全出口不少于（）个。

A．1 

B．2 

C．3 

D．5