1. He____the difficulty of the work. 他使我確信這件工作的艱巨性. 2. I try to____get rid of the danger at once. 我試圖說服他立刻擺脫危險. 3. He tried to________they travel by airplane is quite safe. 他盡力使他們相信乘飛機旅行是安全的. 4. He________it's no use trying to convince them. 他堅信試圖說服他們是沒有用的. 5. You are a teacher of him, so you'd better____ quit smoking. 你是他老師,你應該勸說他放棄吸煙.
