1. (2022七上·义乌月考) 用方框中所给词的适当形式填空，每词限用一次。

be   do    this  rain   they

1. （1） It is always in London.
3. （2） Look at sweet apples. I'd like to enjoy one.
5. （3） The girls under the tree are reading books.
7. （4） There  a crayon and two erasers in the pencil box.
9. （5） It's time for us our homework.