My sister met him at the Grand Theatre yesterday afternoon，so he ________ your lecture.
| A．couldn't have attended | B．needn't have attended |
| C．mustn't have attended | D．shouldn't have attended |
Two lawyers have donated $50,000 toour school's campaign "Help the Needy", which was started by our former headmaster three years ago.
| A． | sponsor | B． | launch | C． | organize | D． | plan |
- I'm going to San Francisco for a couple of days.
-I wish I could get away for a while.
| A． | It doesn't matter | B． | Forget it |
| C． | I really envy you | D． | I can't agree more |
Had they known what was coming next, theysecond thoughts.
| A． | may have | B． | could have | C． | must have had | D． | might have had |
Mike was usually so careful, ______this time he made a small mistake.
| A．yet | B．still | C．even | D．thus |
Ellen was a painter of birds and of nature, _____, for some reason, had withdrawn from all human society.
| A．which | B．who | C．where | D．whom |