Is this the reason why for which he refused our offer?为什么中间会

Is this the reason why for which he refused our offer?为什么中间会 This is the reason why\for which he is late for school.为什么wh this is the reason 【why】he was late for school? this is the This is the reason whyhe late for school为什么用why,why可不可以省 求高手指教.This is the reason for which he didn't come to meeting the reason he refused my inviation is that he has been.为什么这个 the reason(why\which) he explained 改错:the reason why he is always late for class The reason why 可以代换为the reason for which What is the reason that he gave for this?为什么是定语从句啊 Do you know the reason why/for which he didn't come?这句话的意思? 为什么This is the reason （that） he is late