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将下列句子改写成复数形式1.Itisbox.2.Who'sthatgirl?3,What'sthis?It'sanegg.4.Ishereadingabook?5,Thereisatreenearthebighouse.

题目详情
将下列句子改写成复数形式
1.It is box.2.Who's that girl?3,What's this?It's an egg.4.Is he reading a book?5,There is a tree near the big house. 
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答案和解析
1.these are boxes.
2.who are those girls?
3.what are these?these are eggs.
4.are they reading books?
5.there are trees near the big house.