It came as shock to learn that Bob, one of the top students in our class, failed in exam.
A. /; the
B. a; the
C. a; an
D. /; an
网友回答
A. /; the
(答案→)B. a; the
C. a; an
D. /; an
解析：句意：得知Bob，我们班最好的学生之一，在这次考试中没有及格，很是震惊。第一个空，是泛指，故用不定冠词a；第二个空是特指“这次考试”，故用定冠词 the，选B。