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 |
With so much money, he __________ worry about a little thing like 5 cents ！
| A．can |
| B．must |
| C．may |
| D．should |
I __________ myself more-it was a perfect day.
| A．shouldn't have enjoyed |
| B．needn't have enjoyed |
| C．wouldn't have enjoyed |
| D．couldn't have enjoyed |
When he was a little boy, he used to go there and watch __________.
| A．to repair trucks |
| B．trucks to repair |
| C．trucks being repaired |
| D．trucks repairing |
Seeing the road __________ with snow, we had to spend the holiday at home, watching TV.
| A．blocking |
| B．to block |
| C．blocked |
| D．to be blocked |
When I passed the house, I saw him __________ and didn't disturb him.
| A．read |
| B．to read |
| C．reading |
| D．to be reading |