This isn't an English book.变复数.Are they rulers?变单数.How is he?变成复数_英语解答

This isn't an English book.变复数.Are they rulers?变单数.How is he?变成复数还是单数啊,应该怎么变

人气：401 ℃　时间：2020-01-19 20:48:03

解答

These aren't English books.
Is it an ruler?
How are they?
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