________ which university to attend，the girl asked her teacher for advice. (2013·四川，8)
| A．Not knowing | B．Knowing not |
| C．Not known | D．Known not |
--- I didn’t tell my parents the secret yesterday.
--- But you ______.
| A．ought to do | B．ought to | C．should | D．ought to have |
In 1911, Madam Curie received a second Nobel Prize for her research, the first person in the world ______ two Nobel Prizes.
| A．receiving | B．received | C．to receive | D．being received |
--- The floor is dirty. Can anyone clean it?
--- ______. I do it all the time.
| A．Don’t mention it | B．Why you? | C．Not sure. | D．Not me again. |
In the face of ____
__ failure, it is the most important to keep up _____ good state of mind.
| A．/ ; a | B．a; / | C．the; / | D．/; the |
Tom hurried to school only to find that there was none because it was Sunday and he _____to school.
| A．couldn’t have gone | B．needn’t have gone | C．mustn’t go | D．needn’t go |