根据句意及所给首字母提示，补全下列单词。

1. --What a pity that you lost the game!

  --If I have another c           , I'll beat her.

2. You must finish your homework t           .Tomorrow morning Miss Wang will    check it.

3. This afternoon, I'm going to buy some s          to post these letters.

4. What's the best gift have you ever r           ?

5. Marry is out. P           she went shopping with her friends. I'm not quite sure.