英语 四年级 选择题 标准 现在进行时基本用法 — 英语选择题 外研社版(主编:孙有中)·英语 Unit 6 Fun times AI 三重审校通过 题目 Look! The children ______ in the park now. They are laughing and singing happily. Which one is correct? A. play B. plays C. are playing D. played 登录后查看答案与解析 用此考点生成试卷 本单元全部练习题 更多英语选择题