——Did you punish him for that?　　——Yes,but I don’t think I

——Did you punish him for that?　　——Yes,but I don't think I ____
7．——Did you punish him for that?
　　——Yes,but I don't think I ____.
　　A.should have done so B.need to have done so
　　C.should do that D.ought have done that
为什么不选C

选A,对过去的事情表示的推断用should have done
再问： 为什么不选C,I don't think I should do that 不就是I think I shouldn 't do that，我不应该这样做
再答： 因为回答者在回答yes的时候，惩罚他这件事情已经是过去的事情，所以是should have。 如果这句话是下面这样的，那么答案就应该是C了。 ——Will you punish him for that? 　　——No, ,I don't think I should/will do that