—Do you know the tall man to Mr. King over there?—Sorry I don’t know him. A. to speakB.

问题补充：

—Do you know the tall man to Mr. King over there?

—Sorry, I don’t know him.

A. to speak

B. speaking

C. is speaking

D. has spoken

答案：

A. to speak

(答案→)B. speaking

C. is speaking

D. has spoken

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