It is said that potato chips by mistake about a hundred years ago. A. invent B. invented C. are invented D. were invented 【查看更多】

 

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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

 

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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

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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

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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

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

A．invent               B．invented           C．a(chǎn)re invented           D．were invented

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