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新概念第一册第130课课后练习
网校学员hon**在学习英语零基础直达大学六级全能畅学卡【现金奖励班】时提出了此问题，已有1人帮助了TA。
网校助教
清醒季smile
同学你好，该知识点来自沪江网校《英语零基础直达大学六级全能畅学卡【现金奖励班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。
同学你好~1 He must have been ill.
2 He had to stay at home. been后面不能接动词原形的
3 She must have been German.
4 I lost my pen so I had to buy a new one.
5 He forgot his case so he had to return home.
6 She must have been sleeping.
祝同学学习进步~
版权申明：知识和讨论来自课程：《英语零基础直达大学六级全能畅学卡【现金奖励班】》的学员和老师，如果想了解更多，可以报名参加课程学习。所有知识讨论内容，版权归作者及沪江网校所有。
