问题补充:
My friend Tom me for an hour yesterday.
A. keep; wait
B. keeping; waited
C. kept; waiting
D. keeps; to wait
答案:
A. keep; wait
B. keeping; waited
(答案→)C. kept; waiting
D. keeps; to wait
解析:句意:昨天我的朋友汤姆让我等了一个小时。根据时间状语可知描述的是过去的动作,故用过去时态,等待是主语的伴随性动作,故用现在分词。选C。