“Why couldn’t they meet us at five o’clock?” “Because they were delayed by ________.”
Sorry I’m late. I ______ have turned off the alarm clock and gone back to sleep again.
I’m surprised that he ______ in the match.
Haven’t I told you that you ______ have the answer tomorrow morning?
There used to be a small school, ______ ?
Always the old lady ______ sit for hours doing nothing at all.