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
A: to keep you wait
B: to have kept you waiting
C: to keep you waiting
D: to keep you to wait
举一反三
- —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
- I’m sorry to keep you ____________ for a long time. (wait)
- I'm sorry that I've kept you _______ for so long. A: to wait B: waiting C: to be waiting D: waited
- I am sorry to have kept you __________ for two hours. A: wait B: to wait C: waiting D: waited
- I am sorry( keep )_______ you waiting for so long .