智慧职教: I am sorry to have kept you __________ (wait) for two hours.
举一反三
- I am sorry to have kept you __________ for two hours. A: wait B: to wait C: waiting D: waited
- I am sorry that I have kept you (wait) ________ for so long.
- I am sorry to have kept you ____.
- 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 waiting D: to keep you to wait
- —I’m sorry to have kept you ______ for such a long time.—It doesn’t matter. A: wait B: waiting C: to wait D: is waiting