—Time is limited. I have to finish this tonight.—But it’s midnight now and you should have

问题补充：

—Time is limited. I have to finish this tonight.

—But it’s midnight now and you should have a sleep much work you have to do.

A. however

B. no matter

C. although

D. whatever

答案：

(答案→)A. however

B. no matter

C. although

D. whatever

解析：考查让步状语从句：句意为：无论有多少活要做，你都应该睡一觉。用however(相当于no matter how)修饰much work。 although也可以引导让步状语从句，但其后应跟句子的主语，且不用倒装语序。Whatever修饰的是名词，选A。