I______Professor Jones had taught me this question.
It is reported that _______ the young, with their parents working in distant cities, suffer from a sense of loneliness.
In my mind, no such _____ thing in our country as _____ Great Wall can stand for the image and culture of China.
—Where on earth did you get the book? — ______
Even if you had not been able to see her, you ______ us.
—Because of the rain, we’ll have to ______the football match.—I’m free next Sunday if you would like to play then.