1. 单词拼写(单句首字母填空)。

1. （1） If you borrow something from others, you had better r the thing to them.

3. （2） Some students think s is the most difficult subject.

5. （3） I want to travel around the w.

7. （4） Before you send a letter, you usually put a s on the envelope.

9. （5） In China, you mustn't do any c on the first day of the Spring Festival.