You should try to get a good night sleep much work you have to do.A. howeverB. whateverC.

问题补充：

You should try to get a good night sleep much work you have to do.

A. however

B. whatever

C. no matter

D. although

答案：

(答案→)A. however

B. whatever

C. no matter

D. although

解析：句意：无论你有多少工作要做，你应该保证有充足的睡眠。However /no matter how可以引导让步状语从句，结构是：However/no matter how+adj/adv.+主语+谓语，B项whatever应该接名词，C项少了how，D项although不能接倒装句，选A。