Class regulations require _____ is the last to leave the classroom _____ off all
题型：不详难度：来源：
Class regulations require _____ is the last to leave the classroom _____ off all the lights.| A．who; should turn | B．whom; shall turn | | C．whomever; turns | D．whoever; turn |
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答案
| D |
解析
| 考查名词从句的连词和虚拟语气用法。主语从句中缺少主语，故用whoever="the" person who, require后接宾语从句，句中动词用（should）do。 |
举一反三
—Where is Bob? I cannot find him anywhere.
—He have been off long. I heard him make a call just now.| A．shouldn’t | B．can’t | C．mustn’t | D．needn’t |
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If the prediction for the earthquake ________ more accurate, we would have been more prepared and many more lives would have been saved.| A．had been | B．was | C．has been | D．were |
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—Who has made a mess in my room?
—Who else it but your naughty son?| A．could do | B．could have done | C．did | D．has done |
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--- I have great difficulty figuring out the answer to this problem.
--- _____ my advice, you ____ less difficulty with such problems. | A．If you had followed, would have had | B．If you followed, would have | | C．If you had followed, would have | D．If you listen, will have |
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I am glad that you have managed to come. You ___ have brought wine. We’ve got plenty.| A．wouldn’t | B．couldn’t | C．mustn’t | D．needn’t |
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