The reason [ ] being late for the meeting was [ ] his littlt son fell ill this morning .
问题描述：
The reason [ ] being late for the meeting was [ ] his littlt son fell ill this morning .
a,for,that b,why ,that c,why ,because d,for ,because 【说一下原因】
答
表示...的原因,一般情况下,reason与for 连用,the reason for
当然也可以用why,这时就是why 引导的定语从句了,上句便可以改为The reason why he was late for the meeting was that his little son fell ill this morning .
that his little son fell ill this morning that引导表语从句.