You should try to get a good night’s sleep ______ much work you have to doa、 however b、 no matter c、 although d、 whatever不选BC的原因是什么

You should try to get a good night’s sleep ______ much work you have to doa、 however b、 no matter c、 although d、 whatever不选BC的原因是什么
You should try to get a good night’s sleep ______ much work you have to do
a、 however
b、 no matter
c、 although
d、 whatever
不选BC的原因是什么

You should try to get a good night’s sleep ______ much work you have to doa、 however b、 no matter c、 although d、 whatever不选BC的原因是什么
选 A
however "无论如何" 的意思
译为：无论你要做多少工作,你晚上都应该保证良好的睡眠（睡一个好觉）
如果选 B 它的用法在这里相当于从句 no matter how much work you have to do
如果选 C 必须的有主语 although为一个连词,you although you have much work to do

B中缺少how，用C的话语序不对。

很明显此处是需要关系词连接，BC均为副词

这位同学我觉得应该选c对于这c , d这个词的用法我查了一下，觉得还是应该是选c,现在我把这两个的用法给你发过来你再看看。whatever的用法
Whatever有两个用法，一是引导名词性从句（如主语从句、宾语从句、表语从句），二是用于引导让步状语从句。
1. 用于引导名词性从句
Whatever she did was right. 她做的一切都是对的。
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这位同学我觉得应该选c对于这c , d这个词的用法我查了一下，觉得还是应该是选c,现在我把这两个的用法给你发过来你再看看。whatever的用法
Whatever有两个用法，一是引导名词性从句（如主语从句、宾语从句、表语从句），二是用于引导让步状语从句。
1. 用于引导名词性从句
Whatever she did was right. 她做的一切都是对的。
Whatever she did was right. 她做的一切都是对的。
I will do whatever you wish. 我可做任何你想我做的事。
Give them whatever they desire. 他们想要什么就给他们什么。
Whatever I have is at your service. 我所有的一切都由你使用。
You may do whatever you want to do. 无论你想做什么事，你都可以做。
I’ll just say whatever comes into my head. 一我想到什么就说什么。
One should stick to whatever one has begun. 开始了的事就要坚持下去。
She would tell him whatever news she got. 她得到的任何消息都会告诉他。
I’m going to learn whatever my tutor wishes. 我将学习任何我的导师愿意我学的东西。
College students are seen doing whatever work they can find. 我们可以看到,只要有工作，大学生们什么都干。
Do whatever she tells you and you'll have peace. 她叫你干什么你就干什么,那你就太平了。
2. 用于引导让步状语从句
Whatever we said, he'd disagree. 无论我们说什么，他都不同意。
Whatever happened I must be calm. 不管发生什么情况我都要镇静。
We’ll go along together whatever happens. 不管发生什么情况我们都要起干。
Don’t lose heart whatever difficulties you meet. 不管遇到什么困难都不要灰心。
Whatever you do, I won't tell you my secret. 不管你做什么，我都不会把我的秘密告诉你。
Whatever happens, we'll meet here tonight. 不管发生什么事情，我们今晚都在这儿碰头。
Whatever happens, the first important thing is to keep cool. 不管发生什么事,头等重要的是保持冷静。
1. although较正式，语气强
Although he was tired, he went on working.
2. although引导的从句放在主句前后均可，有时还可放在句中。
Although many difficulties are still ahead, we are determined to make greater achievements. 尽管在前面的道路上还有许多困难，但是，我们决心要取得更大的成就。
He often helps me with my English although he is quite busy. 尽管他相当忙，但是还常常帮我学英语。
3. although引导的从句不能与but, however连用，但可与yet, still连用。不能说：Although he was old, but he worked hard. 应把but去掉。当然，保留but而去Although也可。

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B应该是no matter what
C与题意不符