英语 四年级 选择题 简单

They're doing... 复数进行时 — 英语选择题

外研版·英语(三起) Module 3 What are they doing? AI 三重审校通过

题目
公园里,几个孩子正在放风筝。选出正确的英文表达。A. They're flying kites. B. They're fly kites. C. They're flies kites. D. They're flying kite.