What ____ Amy and Sam doing?a.are b.am c.is

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What____AmyandSamdoing?a.areb.amc.isWhat____AmyandSamdoing?a.areb.amc.isWhat____AmyandSamdoing?a.are

What ____ Amy and Sam doing?a.are b.am c.is
What ____ Amy and Sam doing?a.are b.am c.is

What ____ Amy and Sam doing?a.are b.am c.is
are
主语是Amy and Sam ,为复数概念
Amy 和 Sam 在做什么?
请及时采纳,不懂继续问( 天天在线 )

are
主语Amy and Sam 是两个人 所以用be动词的复数形式 are
望采纳
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