1. 选词填空

help    one    swim    they     can

1. （1） Tomorrow is Sunday. Let's go  .
3. （2） I believe we  live on the moon one day.
5. （3） Andy is a  boy. We all like him.
7. （4） Lily and Nick are twins.  mother is a doctor.
9. （5） —Excuse me, where is the reading room?

   —It's on the  floor of Building A.