选择搭配

What must we do?                              A. We use water to wash clothes.

What do you know about fire?           B. We must be quiet.

What mustn't we do at home?           C. We mustn't play near fires.

What time do you go to bed?            D. Fire gives us heat and light.

How do we use water?                       E. I go to bed at 10:00 p.m.