1. (2017九上·阜宁期中) 根据句意用括号中单词的适当形式填空，使句子的意思完整、正确。

1. （1） The man in a white shirt is in his ．(fifty)

3. （2） I doubt whether it is worth so much time on homework．(spend)

5. （3） After hard work, he in getting a scholarship．(success)

7. （4） Red may help when you are having difficulty making a ．(decide)

9. （5） As a good doctor, you should not be too ．(impatient)