“他们是什么时候开始学英语的?” 用英语怎么说?
问题描述：
“他们是什么时候开始学英语的?” 用英语怎么说?
答
When do they start learning English？
答
When they start learning English
答
When did they start to learn English?
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采纳我的吧~~
答
When do they start to learn English