If I more about the earth in the past, I would have made different choices about what to do and what to buy. [ ] A．knewB．have known C．had knownD．knows 题目和参考答案——青夏教育精英家教网—

题目内容

If I ________ more about the earth in the past, I would have made different choices about what to do and what to buy.

[　　]

A．knew

B．have known

C．had known

D．knows

答案：C

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