9. 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为什么不能选C而要选A呢?

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9. 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为什么不能选C而要选A呢?

9. 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为什么不能选C而要选A呢?
9. 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
为什么不能选C而要选A呢?

9. 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为什么不能选C而要选A呢?
句意: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)
这里,although为一个连词,如果用的话,应是:
You should try to get a good night's sleep although you have much work to do.意思符合但原句语序不对,非从句.
however修饰work,它的用法在这里相当于从句no matter how much work you have to do,
意为无论你要做多少工作

原意为:虽然你有很多工作要做,但你也要尽量保证充分的睡眠。这样选C句意就显得通顺些。

因为however有让步的意思,表示转折,表示同一件事

这句话要表达的是:无论有多少工作你不得不做,你应该去有一个号睡眠。
只有A是这个意思啊
如果要选C,原句应该改成:…although there is much work……