"the reason causing the problem is ..."应该是the reason for 还是 the reason 后面接ing

the reason causing the problem is ...应该是the reason for 还是 the reason 后面接ing Do you know the reason why her husband died suddenly yesterday?It is said he died of an illness ---- by drinking too much.A.caused B.causing C, to be saused D. being caused the reason that和the reason why the reason why与 the reason the very reason是什么意思the very reason 谁知道the reason what is the reason with the same reason Sth,causing the problem hard to settle语法对吗? His drunk driving resulted in the accident,causing the death of 12 people为什么用causing,caused为什么不可以? the reason for和the reason why的区别? the reason for 与 the reason why的区别 是the reason for还是the.reason.why the reason of 与the reason for的区别 explain the reason还是explain for the reason the reason why 和the reason that有区别吗 the reason why和 the reason that 的区别 the reason why和the reason that两者如何区分