There are forty books on the shelf.Thirty of them are new.The others are old.1.____ _____of the books on the shelf are new.2.______ ______of the books are old.
问题描述:
There are forty books on the shelf.Thirty of them are new.The others are old.
1.____ _____of the books on the shelf are new.2.______ ______of the books are old.
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