he must have been there before-----
he must have been there before-----
a.has not he
b.have not he
c.dose not he
d.is not he
我记得类似的问题 都是看 主语是第几人称的 如果是的话
a.has not he
b.have not he
c.dose not he
d.is not he
我记得类似的问题 都是看 主语是第几人称的 如果是的话
英语人气：719 ℃时间：2019-10-11 21:19:49
优质解答
选A这是反意疑问句的用法问题...陈述部分有must 的疑问句,疑问部分根据实际情况而定.He must be a doctor,isn't he?You must have studied English for three years,haven't you?/ didn't you?He must have finished...
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