【考点导航】
1) It _____ have been Tom that parked the car here, as he is the only one with a car. (09上海卷)
A. may B. can C. must D. should
2) He did not regret saying what he did but felt that he _____ it differently. (09江苏卷)
A. could express B. would express
C. could have expressed D. must have expressed
【解析】
1) C。本题考查情态动词表示推测。依据句意，“这车子肯定是汤姆停在这里的，因为只有他有车”，这里该用must have done表示对过去情况或动作的肯定推测。
