what___ useful advice he gave me!A.a B./C.anD.the
问题描述：
what___ useful advice he gave me!A.a B./C.anD.the
答
B
因为advice是个不可数名词i haven't seen him ___[for,since,in,at] a few years 我选for对不对啊，原因是不是for+一段时间？你的判断是正确的