After series of unsuccessful attempts, he has finally passed driving testA. /;theB. a; t

After series of unsuccessful attempts, he has finally passed
driving test．
A. /;the
B. a; the
C. the; a
D. /;a

A. /;the(答案→)B. a; theC. the; aD. /;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。

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