1. 根据语境从方框中选择恰当的单词填空，有的需要变换形式。

fairly,   yourself,   whenever,   starve,   sock

1. （1） Look out, Sam. You may hurtwith that knife.
3. （2） Jenny wears a pair of whitetoday:
5. （3） —Helen isn't afraid to speak in public.

   —Yes, she isconfident.

7. （4）  you come, you are welcome.
9. （5） I'm.May I have some hamburgers?