題目列表(包括答案和解析)
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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It is said that potato chips by mistake about a hundred years ago.
A. invent B. invented C. are invented D. were invented
It is said that potato chips ________ by mistake about a hundred years ago.
A. invent
B. invented
C. are invented
D. were invented
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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