问题
选择题
If you don't like a double-decker, the subway, which runs 24 hours day, is alternative for you. [ ]
A. the ; a
B. a ; an
C. / ; the
D. / ; a
答案
答案：B
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If you don't like a double-decker, the subway, which runs 24 hours day, is alternative for you. [ ]
A. the ; a
B. a ; an
C. / ; the
D. / ; a
答案：B