You should try to get a good night’s sleep ______ much work you have to do.A.wheneverB.howeverC.whicheverD.whatever
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B解析试题分析：句意：无论你得做多少工作，你晚上都应该保证良好的睡眠（睡一个好觉）。however much="no" matter how。whenever无论何时；whichever无论哪一个；whatever无论什么。
考点：考查让步状语从句中连词的用法