根据句意填写单词。

1. The box is     _      .  You can put your books in it.

2. I'm sorry for being late, Mr Smith.  I worked too late last night and o          _ this morning.

3. It's           _ of you to believe him.  He never tells the truth.

4. We all know that comedies always have very good and surprising e              

5. On April Fool's Day we can hear many different kinds of h