82. There is no denying that you ___________(越仔细越好) in dealing with this matter。
83. Only when I reached my thirties __________________________ (我才意识到读书是不能被忽视的)
84. Much ___________________ (使研究人员感到惊讶)，the outcome of the experiment was far better than they had expected。
85. Oh, my, I can’t find my key; __________________________(我一定是把它放在哪儿了)。
86.I ________________________(宁愿加入你们去做义工)than go to the beach for a holiday。