I have to _________ my visit as I’ll be very busy

I have much business that has ____ my answering your letter.

If I may be so ______ as to advise you, my opinion is that you should not reply to his let

Please excuse me if I have left any of my questions ______A．to be unansweredB．not to answe

I have been very lucky to have had ______ managers during my career so far.A: terrific

I’ll write to you ____________ I have heard from Helen.A、as well asB、as soon asC、as quic

—Be sure to get up earlier tomorrow morning. —______. I'll be as early as a bird. A) OK I wil