---- It’s very important for everyone to exercise. do you exercise?----Three or four times a week.
The train was late, ______ we had to wait for half an hour.
After a long walk, the old man ___________be tired now.
—Which one do you _________, Jim? — I don’t mind. Either will be OK.
—What kind of music does your sister like best? —The one that she can _________. As you know, she likes dancing very much.
—What’re those over there? —Oh, Some enemies ________ now.