问题
选择题
The reason ______she didn’t come to school was_____
she had to look after her sick mother.
A．because ; why
B．that ; because
C．why ; that
D．which ;that
答案
答案：C
考查定语从句及名词性从句。考查the reason why … was that ……..的原因是……。Why引导定语从句，that引导表语从句，故选C。