英语：I think she must be a teacher,___?怎么写?为什么不用must she呢？

英语：I think she must be a teacher,___?怎么写?为什么不用must she呢？ I think she must be crazy! I think she must be over forty.有语法错误吗 she must be in red .no,（ ）she wears a green coatA：she is B:she must not C:I dou't think so.D:I am not I think you must bleve I think you must got 初二英语改错：I think she maybe wrong. I think I must say goodbye I think she was old.我认为她原来是老的?I don't think she was.She can't have been old.She must have been young.这怎么翻译I think it was cheap.I don't think it was.It can't have been cheap.It must have been expensive.同上.最好将语 几道新概念英语2册上的题一.改写以下句子,用must be 来代替括号里的词组.1.(I,personally,think he is) a fool.2.(I,personally,think he is) mad.3.(I,personally,think she is )over forty. I must think so还是I would think so?原因? I think she is there. I think t___ must be very delicious I think you must be crazy. I think you must be learned.翻译 I think it must be的意思 I THINK YOU MUST BE CARZY I think he is must abolish.