Physics____ ____useful subject in our daily life.
| A．is , a | B．are, an |
| C．is, an | D．are , a |
You had better ask your brother _______ playing computer games. It’s bad for him.
| A．to give up | B．not to give up |
| C．to give it up | D．not give it up |
I would like to stay at home instead of .
| A．going out | B．go out | C．went out | D．to go out |
---Must I finish my homework before I go home?
----No, you _____. But you ____finish it before tomorrow.
| A．mustn’t; must | B．needn’t; must |
| C．must; mustn’t | D．needn’t;mustn’t |
You kept me _______so long.
| A．waiting | B．to wait |
| C．am waiting | D．wait |
James is ________ boy.
| A．a 18-month-old | B．a 18 months old |
| C．an 18-month-old | D．an 18-months-old |