Sam _____ some knowledge of the computer just by watching others working on it．
| A．brought up | B．looked up | C．picked up | D．set up |
Our teachers always tell us to believe in ________ we do and who we are if we want to succeed. （2011四川卷10）
| A．why |
| B．how |
| C．what |
| D．which |
The captain _______him _______a medal for his special contribution the navigation
| A．offer; to; for |
| B．present; for; to |
| C．present; with; to |
| D．offered; with; to |
The girl was listened _______in the next room when I came back last night.
| A．to singing |
| B．to sing |
| C．singing |
| D．sang |
They've made the mistake again, though they _______.
| A．intended to |
| B．didn't intend to |
| C．intended |
| D．didn't intend |
---Bob has gone to California.
---Oh, can you tell me when he _________?（2011北京卷32）
| A．has left |
| B．left |
| C．is leaving |
| D．would leaving |