Loulan is believed __________ over by sandstorms gradually from AD200 to AD400.
| A．to cover | B．to be covered |
| C．to have covered | D．to have been covered |
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 |
-What's your favorite sport?
-Skiing. __________.
| A．I get a kick out of it |
| B．I prefer it |
| C．I choose it |
| D．I'm used to it |