【题目】John can finish this task quickly ______ using better methods.
A. on B. in C. by D. at
在线课程【答案】C.
【解析】根据句意表通过用介词by.
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John can finish this task quickly using better methods.A. on B. in C. by D. at
编辑：chaxungu时间：2026-04-27 02:58:49分类：高中英语题库
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