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一道英语选择题You'vemadegreatprogressinyourstudiesofEnglish,haven'tyou?Yes.butalotofthings.AremaintodoBareremainedtodoCremaintobedoneDareremainedtobedone我搞不懂C,D的

题目详情
一道英语选择题
You 've made great progress in your studies of English,haven't you ?
Yes.but a lot of things ___________.
A remain to do B are remained to do
C remain to be done D are remained to be done
我搞不懂C,D的选项,答案是D,我是选C的
请帮我具体分析,谢谢啊
▼优质解答
答案和解析
remain to be done 保持做某事..主语是人.完整形式是sb remain to be done 当主语是物.就要用被动be remained to be done