Mr．Zhang ________ here for almost 20 years, yet he hasn't had an accident．

A.was driving

B.had driven

C.has been driving

D.will be driving

答案及解析： C

解析：

考查动词时态。由时间状语for almost 20 years可知此处是时间段，且强调动作的持续性，应用现在完成进行时，选C。难度适中。