根据句意，用一个适当的词填空。

1．Who is that?

   That’s my___________ my mother’s sister．

2．Here are the_____________ to the questions．

3．Do you know how to___________ ruler?

  Yes．R-U-L-E-R．

4．Miss Brown is our math teacher（老师），and we like to have her_______.

5．Lucy doesn’t like ping-pong，but I_______