Each book has too_____(cover),a front one and a back one.

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Eachbookhastoo_____(cover),afrontoneandabackone.Eachbookhastoo_____(cover),afrontoneandabackone.Each

Each book has too_____(cover),a front one and a back one.
Each book has too_____(cover),a front one and a back one.

Each book has too_____(cover),a front one and a back one.
covers
请及时采纳,多谢!

two covers

covers
封面的时候可数,加s
希望能采纳,谢谢了

covers
不是too 是two covers 封面,封面 和 封底

two covers