---Do you know the Frenchman? ---Yes. I him for two years.A. knowB. have knownC. knewD. ha

问题补充：

---Do you know the Frenchman?

---Yes. I him for two years.

A. know

B. have known

C. knew

D. have been known

答案：

A. know

(答案→)B. have known

C. knew

D. have been known

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