1. 词形变化

1. （1） Five days (late), he came to my home again and took away that computer.

3. （2） “Where is my homework? I can't find it.” The boy said to (he).

5. （3） Do you know the engineer (lie) under the tree?

7. （4） When he heard the news about his friend, he was so (surprise).

9. （5） We listened (careful) to him, but heard nothing important.