—I came all the way to inform you of the time and place of the meeting. —You could haveyo

问题补充：

—I came all the way to inform you of the time and place of the meeting.

—You could haveyourself the trouble by calling me.

A. spared

B. shared

C. cost

D. removed

答案：

A. spared

B. shared

(答案→)C. cost

D. removed

解析：本题考查动词。could have done 本来能够......cost在此举中是失去，丢掉之意。句意为：你本来可以通过打电话通知我，而省去跑一趟的麻烦。选C。