I’m sure Jack can win the competition this term.—Yes, I agree. _________ he works in his free time!

Try to give its meaning when you meet a new word. Don’t _____ your dictionary all the time.

owed the visitors around the museum, the construction _____had taken more than three years.

填入下列横线处的词语，恰当的一组是(　　)(1)在西南联大和后来的清华大学，历代学生相传着一条重要的经验：谁要想学习理论物理，一个最直接的方法就是借阅王竹溪先生的笔记，______他的各门课的笔记，都为他的历代弟子所“必读”。(2)在国家巨大灾难面前，唐山十三位农民以无声有力的行动，宣告了民间______救灾时代的来临。(3)折子戏的动人风姿，如要完美地继承下来，也需要演员的表演才能与艺术灵性，而“全本”戏没有前人的演出样式可以______，只能完全靠自己探索创新。

He managed what ___a smile of satisfaction though itwas an unexpected result that came out..