This is the reason I was late选词填空

This is the reason I was late选词填空 This is the reason which I was late for .这里的引导词能用that吗?若不能,是 this is the reason 【why】he was late for school? this is the the reason why I was late that "is" got up late the reason why i was late is that i was ill The reason why I was late for school is because I missed the This is the reason why/that she was late for school.两句话有什么区别 老师您好,请教老师：This is the reason _______ he was late yesterday.为 为什么This is the reason （that） he is late This is the reason ____I was telling you about it. 定语从句 is this the reason （ ）he was lat This is reason ()he was late 括号里可以填why/ that 还是其他?