—I didn’t see her yesterday,I looked for her everywhere,but couldn’t find her.—O
题型：不详难度：来源：
—I didn’t see her yesterday,I looked for her everywhere,but couldn’t find her.
—Oh,but you .She was working in the office.| A．must have | B．ought to | C．ought to have | D．can’t have |
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答案
| C |
解析
| 从题意来看，她在办公室里工作，却没有被找到，实际上是应该找得到的，表示应该能做到某事而未能做到，用ought to(或should)+动词的完成式，结合本题的选项应选C。 |
举一反三
—We weren’t sure which way to go.In the end,we turned right.
—You the wrong way.You left.| A．had gone;must have turned | | B．went;must turn | | C．have gone;would have turned | | D．went;should have turned |
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If it for your help,we would be in serious trouble.| A．isn’t | B．aren’t | C．hasn’t been | D．weren’t |
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He requires that he an opportunity to explain his case.| A．is given | B．should give | C．give | D．be given |
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If only I to my parents advice.| A．listening | B．listen | | C．am listening | D．had listened |
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The light is out in her room. She ___ to bed.| A．can’t go | B．can’t have gone | C．must have gone | D．has gone |
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