he was late for school yesterday,that is---he was ill.a,what b,why c,because d,as 选哪个,为什么

问题描述:

he was late for school yesterday,that is---he was ill.
a,what b,why c,because d,as 选哪个,为什么

选择C,表示他迟到是因为生病了

C 那是因为他病了.( 表语从句)