问题描述：
Passive voice:You have to see it to believe it.
1.You have to see it to believe it.
2.We know that you were in town on the night of the crime.
3.Who wrote it?
1.You have to see it to believe it.
2.We know that you were in town on the night of the crime.
3.Who wrote it?
问题解答：
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