sometimes keeps her awake at night is Tom is getting more and more quiet at home.
A. That;which
B. It;that
C. Whether;what
D. What;that
网友回答
A. That;which
B. It;that
C. Whether;what
(答案→)D. What;that
解析：第一空白处what引导主语从句，在本题考查学生对主语从句及表语从句的掌握情况。句中作主语，相当于the thing that。第二空白处that引导表语从句，只起引导作用，不在句中作成分。本句意为：使她有时难以在夜里入睡的是汤姆在家越来越安静。本句话还可改为：Tom is getting more and more quiet，which/and it sometimes keeps her awake at night.