After series of unsuccessful attempts, he has finally passed
driving test．
A. /;the
B. a; the
C. the; a
D. /;a
网友回答
A. /;the
(答案→)B. a; the
C. the; a
D. /;a
解析：本题考查冠词。a series of是固定短语，意为“一系列；一连串”，所以第一空用不定冠词a；第二空用定冠词the，特指驾驶考试。句意：经过连续几次的失败，他最终通过了驾驶考试。