分类：教育/科学-外语学习
问题：他一定已经取回了丢失的手表了，不然她看上去不会这么高兴的。(mu? 
他一定已经取回了丢失的了，不然她看上去不会这么高兴的。(must have got)
回答：He must have got his lost watch,or she would not as happy as she looks like