Mary often does her homework at nine in the evening .(改为一般疑问句)
题目
Mary often does her homework at nine in the evening .(改为一般疑问句)
答案
Does Mary often do her homework at nine in the evening
添加助动词三单形式does,提前到句首;原句里的实义动词三单does恢复成原形do
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我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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