问题补充:
---- What has made him look like lacking sleep?
----- his wife is ill and he has to get up several times a night to attend to her.
A. For
B. Because
C. That
D. What
答案:
A. For
B. Because
(答案→)C. That
D. What
解析:考察主语从句。本题指的that引导主语从句That his wife is ill and he has to get up several times a night to attend to her.在句中不充当任何成分,只起引导和连接作用。AB不能引导主语从句,what要在句中作主语,宾语或者表语。句意:—什么事情让他看起来如此缺少睡眠?—他的妻子生病了,他不得不起床好几次来照顾她。故C正确。