问题
选择题
I ate _____ sandwich while I was waiting for _____ 20:08 train.[ ]
A. the, a
B. the, the
C. a, the
D. a, a
答案
答案：C
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I ate _____ sandwich while I was waiting for _____ 20:08 train.[ ]
A. the, a
B. the, the
C. a, the
D. a, a
答案：C
