I would have dropped in on him but I his address.A. didn’t knowB. hadn’t knowC. don’t kn

问题补充：

I would have dropped in on him, but I his address.

A. didn’t know

B. hadn’t know

C. don’t know

D. wouldn’t know

答案：

(答案→)A. didn’t know

B. hadn’t know

C. don’t know

D. wouldn’t know

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