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Tomwithhisfriendsswimminginthelake.A.isB.areC.beD.being

题目详情
Tom with his friends _____ swimming in the lake.
A.is
B.are
C.be
D.being
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答案和解析
答案选A.with his friends在句子中不做主语,位置可以调到后面.Tom __is__ swimming in the lake with his friends .
如果是Tom and his friends做主语的话,谓语动词就要用复数are.即 Tom and his friends are swimming in the lake.