问题补充:
The reason he gave for being late was he overslept this morning.
A. why; that
B. which; that
C. why; because
D. which; because
答案:
A. why; that
(答案→)B. which; that
C. why; because
D. which; because
解析:这题考查定语从句的用法:第一空先行词是the reason,定语从句he gave for being late缺少主语 ,所以填that或which或省略关系代词。第二空填that,因为主语是the reason表语从句只能用that引导。选B。