The number of the people invited ____fifty, but a number of them_____ absent for different reasons.

______ proves that Jack is really enthusiastic and cautious.

I won’t attend the meeting _______ him， _______ I have too much to do these days.— I see.

I have ________ breakfast at 7:00 in the morning.

m sorry, but there’s no smoking roomin this section on the train.　—Oh, I _____ that, and I won’t smoke again.