题目内容

Is your washing machine ____________ working?
A．don’tB．doesn’tC．won’tD．not
D

试题分析：句意：你的洗衣机没有在工作吗？进行时态的肯定句，变疑问句，把 is 提到主语前面。如果是否定句，可以只提前is, not 位置不变。故选D。
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