问题描述：
1.The man lives on the _____________(twenty) fool
2.Some famous_________(seience)are going on a trip
3.上个月他们放了三天假
They______three days ___ last month.
2.Some famous_________(seience)are going on a trip
3.上个月他们放了三天假
They______three days ___ last month.
问题解答：
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