1. 用方框中所给单词的适当形式填空。

balance    power   work   difficult   require

1. （1） This situation that he should be present.

3. （2） She has great getting used to the new job.

5. （3） She wears red to make herself more .

7. （4） The pills the doctor gave me don't . I still feel terrible.

9. （5） - Can you on one foot? - Oh, I can't.