Mr Zhou is very _______ with his students. He asks them not to be late. If they are late, they have to stay outside the classroom until the next class.

---_____ do you eat junk food? --- I like it. I eat it three times a week.

When the father heard from his son from abroad, he became ________.

3.. --- Smile is a magic thing. --- Yes. It costs ______ but gives so much.

— How about            Christmas evening party?— I should say it was            success.