— How long do you suppose it is ______ he arrived here?— No more than half a week.
The boy the teachers considered _____ was caught ______ in the exam, which surprised us very much.
Tom ought not to ________ me your secret, but he meant no harm.
— You haven’t lost the ticket, have you?— _________. I know it’s not easy to get another one at the moment.
Eating too much fat can _______ heart disease and cause high blood pressure.
--- Tom, why didn’t you come to the meeting yesterday? --- I _____, but my car broke down.