导航：题目详情 | 答案解析 | 相关问题 | 最新问题 You______have been more careful!A．mustB．couldC．wouldD．need 外语类 2017-08-18 17:33:33 已帮助 人 You______have been more careful!A．mustB．couldC．wouldD．need请帮忙给出正确答案和分析，谢谢！ 热搜：关于氨基酸代谢错误的论述是_________。 答案解析 难度★★☆ 搜索 正确答案：B情态动词题。couldhavedone可以表示某事可能发生但却没有发生，也可以表示对别人的抱怨或指责；musthavedone表示对过去情况肯定的推测，意为“一定，肯定”；wouldhavedone表示对事情发生或结果的推测，意为“会……”；needhavedone通常以否定形式出现，即needn"thavedone，表示“本来不必做某事”，但实际上做了。根据句意应选[B]。 相关问题 1、The research requires more money than ______.[2007]A．have been put inB．has been put inC．be 2017-08-28 2、Had Judy been more careful on the maths exam she ______ much better results now.[2008]A．w 2017-08-29 3、If the captain ____more careful his ship would not have been sunk.A．should beB．were to be 2017-09-07 4、In doing experiments you must be ______ the precision instruments.A．more than careful wit 2017-09-17 5、You should take care that you have not ________ any detail in the design. A：disappeared 2017-10-09 6、I hope that you 11 be more careful in typing the letter: dont______anything.A．lackB．withdr 2018-02-07
