问题
选择题
He turns deaf ear to his parents, many times they have pointed out his weaknesses.
A．whatever
B．whichever
C．whenever
D．however
答案
答案：D
本题考查由however引导让步状语从句， however many times ：无论多少次。根据含义：无论多少次他们指出他的缺点，他对他的父母充耳不闻。故选D.