1. (2019七上·义乌月考) 用方框中所给单词的适当形式填空，每词仅用一次。

be   teacher    go    hand    chair

1. （1） It's time  now.
3. （2） My brother and I students.
5. （3） —How many are there in the classroom?

   —There are ten.

7. （4） Please wash your  before meals(饭前).
9. （5） There's a  desk in the front of the classroom.