用be动词的适当形式完成句子

问题描述:

用be动词的适当形式完成句子
Where ________ Mr Chen's ruler?
Hello!I __________- Tina's sister
Many apples __________ in the case
I have a clock and it _________ on my desk
Tom and Mike _______ not at home
This ___________ Helen's uncle.And those _________ her cousins.

1.is
2.am
3.are
4.is
5.are
6.is,are