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C11U9 Review 1
Author :
Modern English
1.
which battery / Do you know / should / buy / I ?
2.
they / where / are / Can you tell me ?
3.
when / you / Can you remember / it / last changed ?
4.
it / Do you have any idea / how much / costs ?
5.
why / isn't / I have no idea / working / it
6.
last changed it / when / I don't know / I
7.
two / I / if / I wonder / should / batteries / buy