—Is Mike a diligent student? —No,but he is a lazy one,if .
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.