185. Hello! I you in London. How long have you been here?A. don't know…wereB. hadn't know

问题补充：

185. Hello! I you in London. How long have you been here?

A. don know…were

B. hadn known…are

C. haven known …are

D. didn know … were

答案：

A. don know…were

B. hadn known…are

C. haven known …are

(答案→)D. didn know … were

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