There's a man at the reception desk who seems very angry and I think he meanstrouble.A. ma

问题补充：

Theres a man at the reception desk who seems very angry and I think he meanstrouble.

A. making

B. to make

C. to have made

D. having made

答案：

A. making

(答案→)B. to make

C. to have made

D. having made

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