英语 六年级 选择题 简单 过去进行时:was/were doing — 英语选择题 辽宁师大版·英语 Unit 5 A birthday party AI 三重审校通过 题目 At 7 o’clock yesterday, Lily ___ at her birthday party. A. was singing B. were singing C. was sing D. were sing 登录后查看答案与解析 用此考点生成试卷 更多英语选择题