—I did not know you were good friends. —You. I have known her since she moved here. You we

问题补充：

—I did not know you were good friends.

—You. I have known her since she moved here. You were abroad then.

A. may have

B. needn’t have

C. couldn’t have

D. must have

答案：

A. may have

B. needn’t have

(答案→)C. couldn’t have

D. must have

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