选择适当的介词或副词填空(in, at, on, over, down, up, after)
1.Who is ________ duty today?
2.Please sit ________ there.
3.What's this ________English?
4.What are these ________Picture 3?
5.Stand ________, Please.
6.Please look _________ your cats.
7.Liu Mei and Han Meimei are ________ the same row.
8.Is Zhang Dong ________ home or ________ school?
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