bright a talker you are there are time when it’s better to remain silent.A. WhateverB. H

问题补充：

bright a talker you are, there are time when it’s better to remain silent.

A. Whatever

B. However

C. Whenever

D. Whoever

答案：

A. Whatever

(答案→)B. However

C. Whenever

D. Whoever

解析：考查让步状语从句。句意：句意：无论一个讲话者有多聪明，也有应该保持沉默的时候。Whatever无论什么，作主语或宾语；however无论多么，作状语；whenever无论何时，作时间状语；whoever无论是谁，作主语。这里修饰形容词bright，用however，相当于no matter how。故选B。