单选题
Telecommuting, ______ the computer for the trip to the job, has been hailed as a solution to all kinds of problems related to office work.
A、
substitutes
B、
substitution of
C、
substituting
D、
to substitute for
【正确答案】
C
【答案解析】
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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