4．我不知道谁在家,咱们敲敲门.I don’t know who is at home．Let’s ． 5．中国有许多不同的节日.T
问题描述：
4．我不知道谁在家,咱们敲敲门.I don’t know who is at home．Let’s ． 5．中国有许多不同的节日.T
答
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I don’t know who is at home．Let’s knock the door.
There're many different festivals in China.