-She looks very happy .She___have passed the exam.-Iguess so.It's not difficult after allA.shouldB.couldC.mustD.might要解释为什么...

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• 32.True friendship is like sound health,whose value is seldom known_______it is lost.C.until D.unless26.We are ensured that there are enough textbooks for each student to have _______ when the new semester comes.A.it C.one 27.— She looks very happy.She _______ have passed the exam.— I guess so.It’s not difficult after all.C.must D.might38.— Did you take enough money with you?— Yes,but I spent _______ I had expected.A.not so many as B.as many as C.much
• —She looks very happy .She ______have passed the exam.--I guess so.It's not difficult after all.
• —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.-Iguess so.It's not difficult after allA.shouldB.couldC.mustD.might要解释为什么...
• i am very happy to stand here 有语病么1.i am very happy to stand here2.i believe we will become good friends very soon 这两个句子有语法上的错误么
• To be happy,it's very important to have a good attitude and a good heart.改成To be happy,it is ___ ____ ____ to have a good attitude and a good heart.