1. 从方框中选出合适的短语，并用其适当形式填空

start with,    at first,    get to know,    write to,    communicate with

1. （1） I didn't like maths , but I became interested in it with the help of Mr. Green.
3. （2） At the moment I'm my pen friend.
5. （3） The party will , an English song.
7. （4） We have been friends for a long time. I him ten years ago.
9. （5） Some parents want to know how to their children.