1. 用方框中所给单词或短语的适当形式填空。

check in       know       play with       to be honest           keep one's balance

1. （1） At home I usually my doll.
3. （2） , I can't speak English well.
5. （3） I have to hold on to the rope.
7. （4） First we at the airport just now.
9. （5） I'm dying what happened.