-- When was the old car invented? -- I think the car about one hundred years ago. A. invented B. was invented C.invents D. is inventing 查看更多

 

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—When was the old car invented?

—I think the car       about one hundred years ago.

A.invented        B.was invented        C.invents

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-When was the old car invented?

-I think the car ________ about one hundred years ago.

[  ]

A.invented

B.was invented

C.invents

D.is inventing

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