— Do you know when he the trip to the USA?— Perhaps next week but I’m not sure.A. makes

问题补充：

— Do you know when he the trip to the USA?

— Perhaps next week, but I’m not sure.

A. makes

B. made

C. has made

D. is making

答案：

A. makes

B. made

C. has made

(答案→)D. is making

解析：答句next week提示问句中make the trip是将来的动作。D项is making为进行时表“将来”，故D项正确。