--- Now lots of teenagers spend a lot of time playing computer games. --- Yes. Teachers and their parents should prevent them ___________ too much.
—The song Where did the time go ________ the old days and the love of family.—Sure. It’s my favorite song.
I saw Ken in the meeting room, he ______ Joe for the school magazine.
—What _______ the number of the students in your school?—About two thousand. A number of them _______ from the countryside.
—I can hardly believe my eyes. Is that you, Lucy?—Yes. It has been almost 20 years ______ we were together.
—It’s smoggy these days. That’s terrible!—Yes, I hope to plant trees. ______ trees, ______air pollution.