Ifyouwanttocatchupwiththem,you'd

发布时间：2020-07-27 17:23:41

If you want to catch up with them, you'd better run ________.A.enough fastB.more fastC.fast enoughD.slow enough

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C解析解析：fast在此为副词, enough修饰副词时，要放在副词的后面。
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