1. 根据句意及首字母提示补全单词

1. （1） H，they haven't found the missing boy．
3. （2） Nof the students except Jim is in the know of the exam．
5. （3） We can use senergy to do many things today．
7. （4） He found it i to make her change her mind．
9. （5） I have very happy n to share with you．