--May I pick a flower in the garden?
--No, you _________.
| A．needn’t | B．mustn’t | C．can’t | D．won’t |
His sister left home in 1998, and ____________ since.
| A．had not been heard of | B．has not been heard of |
| C．had not heard of | D．has not heard of |
We are not ready to go into production yet, for the new switch mechanism isn’t fully ______.
| A．tried out | B．tested out |
| C．worked out | D．turned out |
Helen always helps her even though going to school ________ most of her day.
| A．turns up | B．makes up | C．saves up | D．takes up |
The policeman came up to the house, whose door was open, ________ there for a while, and went in.
| A．to stand | B．standing | C．stood | D．stand |
—Too noisy outside! I just can’t focus on my study.
—______. Let’s go outside and play soccer instead.
| A．I don’t think so |
| B．Same here |
| C．Please be more patient |
| D．Don’t push me too hard |