< >there are a fire drill yesterday 找出下列错误的并改正
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thereareafiredrillyesterday找出下列错误的并改正thereareafiredrillyesterday找出下列错误的并改正thereareafiredrillyesterda
< >there are a fire drill yesterday 找出下列错误的并改正
< >there are a fire drill yesterday 找出下列错误的并改正
< >there are a fire drill yesterday 找出下列错误的并改正
are改成was
are 改 was
因为
1.a fire drill 是单数
2.yesterday 是昨天。过去式