Many teenagers_______ the old and they often offer their seats to the old on buses.

Mother ______ him not to smoke, but he wouldn’t listen.

­—I think there ____more students in our school next term.—Well, I think so.

It’s ________ unusual chance for Mr White to get such ________ useful advice.

When did you buy this computer? It looks so new.—I it for only a couple of days. My sister bought it for me as a birthday present.