用方框內(nèi)的詞語完成短文。
have to, can, mustn't, don't have to
  We don't have many rules at home. In my room,for example, I   1   do what
I want.My favorite pop group is  " Take  Four", so I have a lot of their posters
(海報) on the wall. Mum thinks it's okay. I    2   play their music as loudly as I
like, but sometimes Mum comes and shutsthe door.l have a TV in my room, too.
Before I   3    watch TV, I   4   do my homework. "Study comes first. " Mum
always says. From Monday to Friday, when I    5   go to school, I    6   watch TV
in the evening. At the weekend, I   7   watch TV till 11 0'clock. Once a week, I
   8   clean my room.It only takes half an hour,so it's not too bad. Mum cleans the
other rooms, and I    9   help her. When there is a lot to do, I  10   go shopping.

1. can
2. can
3. can
4. haveto
5. haveto
6. mustn't
7. can  
8. have to  
9. don't have to 
10. have to

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