选择合适的答语，将序号填在括号中。

( )1. Where is the canteen?

(     )2. Do you have a library?

(     )3. Is this your art room?

(     )4. How many students are there in your classroom?

(     )5. What colour is the fan?

A. It's green.

B. No, we don't.

C. It's on the first floor.

D. Yes, it is.

E. Forty-one.

公安民警不得使用武器的情形包括（）。

A.处理治安案件

B.处理群众 * * 事件

C.疏导道路交通

D.查处交通违法