英语翻译(要用到宾语从句)

1 I don't know if/whether he is at home .
2 I don't think Mary will come back .
3 I don't believe what he said.
4 Do you know where he works ?
5 You should think about what he has bought .

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1. I don't know if/ whether he is at home.

2. I don't think Mary will come back.

3. I don't believe what he said,

4. Do you know where he is working?

5. You should consider what he has bought.
   

1 I don't know whether he is at home
2 i don't think mary will come back
3 i don't believe what she said
3 do you know where he works ?
4 you should think of what he bought