I’m very sorry ______ the whole morning.I forgot the appointment.A) to keep you wait B) to have kept you waiting C) to keep you wait D) to keep you wait

I’m very sorry ______ the whole morning.I forgot the appointment.A) to keep you wait B) to have kept you waiting C) to keep you wait D) to keep you wait
I’m very sorry ______ the whole morning.I forgot the appointment.
A) to keep you wait B) to have kept you waiting
C) to keep you wait D) to keep you wait

I’m very sorry ______ the whole morning.I forgot the appointment.A) to keep you wait B) to have kept you waiting C) to keep you wait D) to keep you wait
答案 B
be sorry to do 很抱歉做什么事
句意分析：我非常抱歉（）整个早上,我忘记约会了.
从上下文分析,是我“让人家一直等了整个早上”,让人家一直做什么事,keep sb doing
已经让人家等了一上午,已经发生了的事再说抱歉,动作有前后,先发生的动作（让人等候）要用完成时,所以是：to have kept you waiting

B

B
我很抱歉早上让你一直干等了。
keep sb doing sth
因为是早上发生过且持续到说话时，所以用have done sth

B。 keep sb doing 让某人一直做某事
I'm sorry + to do sth
to have done表示事情已经发生了，这叫做不定式的弯成式
对比起让你一直等了整个上午