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It's four in the afternoon.Jack ,with his friends ,__________ (swim) in the lake.是 are swimning 还是 is swimming 中间是有逗号的~

题目详情
It's four in the afternoon.Jack ,with his friends ,__________ (swim) in the lake.
是 are swimning 还是 is swimming
中间是有逗号的~
▼优质解答
答案和解析
是 is swimming
with指伴随性动作,所以sb(单数)+with sb 还是单数.
而sb(单数)+and sb 则是复数.
这个经常考的,要注意啊.