—She looks very happy .She ______have passed the exam.--I guess so.It's not difficult after all.A.should B.must C.could D.must参考答案A,为什么B不行?

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—She looks very happy .She ______have passed the exam.--I guess so.It's not difficult after all.A.should B.must C.could D.must参考答案A,为什么B不行?

—She looks very happy .She ______have passed the exam.--I guess so.It's not difficult after all.A.should B.must C.could D.must参考答案A,为什么B不行?
—She looks very happy .She ______have passed the exam.--I guess so.It's not difficult after all.
A.should B.must C.could D.must
参考答案A,为什么B不行?

—She looks very happy .She ______have passed the exam.--I guess so.It's not difficult after all.A.should B.must C.could D.must参考答案A,为什么B不行?
在作答时必须把整句话读完.必须小心哦,不能答的太快.
"She looks very happy.She ____ have passed the exam." 从这两句看来,你的答案 B 没问题.(从她开心的表情推测她应该是通过了考试.)
可是,后面加了两句:”I guess so.It's not difficult after all.“ (我猜应该是吧.毕竟考试也不难.)这里,作者明显的是在猜测,看得出不是百分之百确定“她”是否真的通过了考试.在这个情况下,“must” 太重了,应为“must”的意思是“一定”.“should” 比较适合,“should” 的意思是“应该是”.
下次小心,出题的人很狡猾哦!

选A,should虚拟语句,固定的语法结构