问题
选择题
一I heard that you got an A in the chemistry exam．Well done!
一Thanks，I know that you a good job as well．
A．shouId have done
B．need have done
C．must have done
D．could have done
答案
答案：C
考查情态动词用法。A本应该做某事实际上去没有做；B本需要做实际上却未做；C一定做了某事；D本可以做却未做。句意—我听说在化学考试中你得了A。做得好。—谢谢。我知道你也一定做的很好。