1. 选择合适的短语填空。

by post，one of，go out，pay over the Internet，one day

1. （1） Look, that girl isour monitors．
3. （2） It's raining.I'm not.
5. （3） She sings well.Maybe she will become a singer
7. （4） I'll send the book to you
9. （5） I want to buy the coat．Can you help me?