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题型:单选题 题类:常考题 难易度:普通

牛津译林版2018-2019学年小学英语六年级下册Unit 1 The lion and the mouse同步练习1

— What are the _______ doing there?

— They are busy _______ their science experiment.

A、Boys students; to do B、Boy students; to do C、Boys students; doing D、Boy students; doing
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