Food safety has become a growing concern. Had the offenders been punished severely enough, the situation________ different now.

 — Mummy, I have broken my train.        一I told you so. You _______ on it.

The boy student is poor in health now; his parents wish that his health _____when he grows up

—The room is so dirty, _____ we clean it?—Of course.

They        have arrived at lunchtime, but their flight was delayed.