This is a book和This is a bag 和This is a pen和This is a pencil和This is a ruler 的复数咋写.
还有This is a pencil-box 复数怎么写 快点我来不及了
人气：385 ℃ 时间：2020-03-28 14:25:12
解答
These are books.
These are bags.
These are pens.
These are pencils.
These are rulers.
These are pencil-boxes.
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