☆( )_______who calls,you must write down what he says.

题目

☆( )_______who calls,you must write down what he says.
A.No matter B.Whenever C.Since then D.Although

答案

A
No matter 无论谁打电话来,你都要记下他说了什么.
whenever 表示无论什么时候,意思不对
since then 表示自从那以后,意思不对
although 表示尽管,虽然,意思不对、
分析下来,应该选A