1. 读一读，选词填空。

am    is    are    was    were

1. （1） My sistershort, but now she tall．
3. （2） It 8 o'clock．I having an English class．
5. （3） Theyin Shanghai last week．Now theyin Changchun．
7. （4） 一 Alice in the hall?

   一No. She in the hall．But now shein the classroom．

9. （5） They tadpoles(蝌蚪)when theyvery young．Now theyfrogs．