--Mr. Li, I found a watch on the playground. --You should try to find out _________A. whose is the watch B. who is the owner of the watchC. whom does the watch belong to
—Is Jack in the classroom now? —No, he football on the playground.
—Where is your brother? —He has gone to Beijing. He back in three days.
—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.