your room must have been cleaned yesterday,_____ it?答案是wasn'

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your room must have been cleaned yesterday,_____ it?答案是wasn't it 请明确回答谢谢

做反义疑问句的时候首先要搞清楚助动词是哪一个
例如You must have been playing tennis at the time,这句话中have做助动词引导现在完成进行时故应该是
You must have been playing tennis at the time ,haven't you
She must have a kind mother,这句话中must表示推测,而不是表“必须”,反意疑问句应该提取后面的助动词 have做的是实意动词表示“有”的意思其助动词应该是do
因为是第三人称单数所以应该是She must have a kind mother,doesn't she?

your room must have been cleaned yesterday,_____ it?答案是wasn' The room must have been cleaned by Tom yesterday,________ it The room must have been cleaned yesterday 的反意疑问句 the room have been cleaned yesterday,____反意疑问句? He must have been annoyed by something yesterday,_____? The room is in a terrible mess；it（）have been cleaned for a He must have been asleep at that time,(wasn't) he?为什么是用 wasn Did you ( ) your room yesterday?A .clean B.cleaned 这个是选择A还是B can you clean your room ,i have cleaned it had 行么、 hopeless John,you must get your room cleaned after lunch I have been your room I like it very It must have rained yesterday,(