The teacher asked the students _________________.

Mum, would you please buy me an MP5 player? — If you can help do the dishes the whole vacation, you ______ have one as a reward.

When Steven suddenly remembered that he had left his mobile in the office, the train was already________.[ ]

I wonder why Jane looks worried today.—-I’m not sure, but she a small accident driving here.

I don’t know who __________ the boy stand here. How poor he looks！