问题
选择题
The reason ________ he hasn’t come is ________.
A．that; because he is ill
B．that; because of his illness
C．why; for he is ill
D．why; that he is ill
答案
答案：D
________ he hasn’t come是定语从句，先行词The reason在定从中作原因状语，用why引导；is后是表语从句，不能用for引导，所以选D。