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What ____ the teachers doing?They are working (work) in the office now.咋填?
人气:177 ℃ 时间:2019-11-15 07:27:30
解答
are,前边一句是问句.有现在进行时的be动词存在,主语是teachers(老师们),所以是第三人称复数,所以用are.
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