题目内容：

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】

优质解答

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.