Don’ put off a travel plan. It’s time for us to start.A. to makeB. makes C. made D. makin

问题补充：

Don’ put off a travel plan. It’s time for us to start.

A. to make

B. makes

C. made

D. making

答案：

A. to make

B. makes

C. made

(答案→)D. making

解析：句意：不要推迟制定旅行计划。是我们动身的时候了。Put off推迟，延期，是一个及物动词短语，所以在它后的动词要用动名词形式。所以选D。