题目内容

If there were no automatic washing machines, people would have to wash their clothes ______ hand or ______ hand-operated machines.
A.by; byB.with; withC.on; withD.by; with
D

试题分析:考察介词搭配。固定搭配by hand用手;手工制作;with machine用机器。句意:如果没有自动化洗衣机,人们就不得不用手或者用手操作的机器来洗衣服。故D正确。
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