Telecommuting, ______ the computer for the trip to the job, has been hailed as a

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问题 Telecommuting, ______ the computer for the trip to the job, has been hailed as a solution to all kinds of problems related to office work.

选项 A、substitutes
B、substitution of
C、substituting
D、to substitute for

答案 C

解析句意：远程办公用电脑代替了长途业务，它被誉为解决各种办公室相关业务问题的好方法。substituting现在分词短语作状语，substitute A for B用A替换B。

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SCISSORS:TAILORA、brush:painterB、computer:writerC、wagon:farmerD、saw:carpe