来源：学生作业帮 编辑：百度作业网作业帮 分类：英语作业 时间：2024/07/21 07:17:34
英语句子改错(语法错误)
1.we will fail the next exam once we study hard at our lessons.
2.the working women agreed to stop striking ,having provided that they could get paid equally.
请说明一下修改原因`~
1 once改成 unless
2 having后面加been
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