87. Our efforts will pay off if the results of the research can be applied to the exploration of new technology.（能应用于新技术的开发）
88. I can’t boot my computer now. Something must be out of order （一定出了毛病）with its operating system.
89. Leaving one’s job, no matter what/whatever it is, （无论是什么工作）is a difficult change,
even for those who look forward to retiring.
90. Compared with the place in which/where I grew up, （与我成长的地方相比）this town is more prosperous and exciting.
91. Not until he had finished the mission（直到他完成使命）did he realize that he was seriously ill.
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