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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.could                        C.must                         D.might

C


解析:

“must have+动词-ed形式”表示“一定做了某事”,根据所提供的情景“She looks very happy.”可判断出她一定通过了考试。“should have+动词-ed形式”表示“本来应该做某事,而没有做”,常用于表示责备。“could have+动词-ed形式”在肯定句型中,往往用作委婉地批评,表示本应该做什么,而没做,有时也用作猜测。“might have+动词-ed形式”表示推测过去做过某事,“也许”发生了。

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4.A. small        B. short         C. little         D. low

5.A. that          B. when        C. why         D. unless

6.A. finished      B. stopped       C. supplied     D. included

7.A. some        B. a            C. the          D. this

8.A. care         B. arrive        C. pretend       D. hurry

9.A. on          B. for           C. at           D. in

10.A. mustn’t      B. couldn’t      C. won’t        D. shouldn’t

11.A. affected      B. about        C. happened     D. was

12.A. how         B. however      C. because      D. why

13.A. yet          B. too          C. again         D. next

14.A. love         B. think         C. miss         D. care

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