用him/her/yours等填空 1 We wrote to John but he didn’t answer ___ letter.​

用him/her/yours等填空 1 We wrote to John but he didn’t answer ___ letter.​
从划线部分选择正确的词语
1. It’s their / theirs problem, not our / ours. 
2. This is a nice camera. Is it your / yours? 
3. That’s not my / mine umbrella. My / Mine is black. 
4. Whose books are these? Your / Yours or my / mine? 
5. Catherine is going out with her / hers friends this evening. 
6. My / Mine room is bigger than her / hers. 
7. They’ve got two children but I don’t know their / theirs names. 
8. Can we use your washing machine? Our / Ours is broken. 
用括号内所给的适当的反身代词填空.
Please help _____to some tea.(myself,yourself)
The machine works by_______.(itself,themselves)
In the party,they enjoyed _______.themselves,them,ourselves)very much.
Nobody taught me to skate.I taught________.myself,himself,me)
He is too young to dress________.(himself,herself,ourselves)