-I saw Mark on the playground just now.–No, it _______ be him. He is ill in bed at home.
—Ann, I am worried I’m getting fatter. What shall I do?—I think you should eat ________ food and do more exercise.
—Why don’t you buy the bike, Mary? — It’s too expensive. I can’t it.
they are twins, they don’t look the same at all.
The mother walked into the room in order not to wake up her baby.
I like English very much. I never miss a to practice English with foreigners.