It is said that potato chipsby mistake about a hundred years ago.[ ]A. inventB. inventedC. are inventedD. were invented-初中英语-n多题

◎ 题干

It is said that potato chips by mistake about a hundred years ago.

[ ]

A. invent
B. invented
C. are invented
D. were invented

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◎ 解析

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◎ 知识点

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