The dam was not strong enough to __________ thefloods.
| A．hold back |
| B．hold up |
| C．hold on |
| D．hold out |
| A．food | B．diet | C．dish | D．meal |
| A．a; a | B．a; the | C．the; a | D．the; the |
| A．surrounding; in which | B．surrounded; in which |
| C．surrounded; where | D．surrounding; where |
I was really anxious about you. You _______ have left home without a word.
| A．mustn't | B．shouldn't | C．needn't | D．couldn't |
___ reading books in my spare time, I also surf on the internet sometimes.
| A．Including | B．Except | C．But | D．Besides |