There are three English-books on the shelf, but ______ of them is mine.

I don’t know why he is late.—Nor do I.He__________an accident.

Must I go to medical school and be doctor like you，Dad— No, you __________, son. You’re free to make your own decision.

to heavy traffic jams, many people would like to choose the train ______ driving.

Mr.White always expects his son ______ an active part at school.