题目内容
9．I'm sorry to keep you for such a long time!（ ）| A． | wait | B． | waiting | C． | to wait | D． | waited |
分析 很抱歉让你一直等了如此长的时间．
解答 答案：B．根据I'm sorry to keep you for such a long time，可知这里考查了keep的用法：keep sb doing sth 让某人一直做某事，后面跟动词ing形式．故选B．
点评 本题考查了非谓语动词的用法．解答时注意短语keep sb doing sth 让某人一直做某事的用法．
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