what are they（）a.talking b.talking about c.looking.d.look选什么

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/11 12:53:45

what are they（）a.talking b.talking about c.looking.d.look选什么不选什么为什么

选b.talking about
还原成陈述句是 they are （）what.
be 动词后应接动词的ing形式,排除d.talking和looking同样排除,因为都为不及物动词.talking what和 looking what 是不行的.必须有介词.
再问：不及物动词有哪些
再答：不及物动词很多啊单词表上标了vt的是及物 vi的是不及物。平常注意看注意积累就行了

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