1. 词句运用：根据句意及所给首字母提示，写出所缺单词，每空一词。

1. （1） Their English teacher was ill. So they learnt English by t.
3. （2） Tom didn't go to school because of his i yesterday.
5. （3） The boy often c. He should take more exercise to keep healthy.
7. （4） Lucy's sister and brother both like eating t very much. 
9. （5） I won't go swimming tomorrow. I'll go shopping with Lisa i.