问题
选择题
—Lin Tao, open _______ door, please.
—I'm coming, Mum. [ ]
A. the
B. an
C. a
D. /
答案
答案：A
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—Lin Tao, open _______ door, please.
—I'm coming, Mum. [ ]
A. the
B. an
C. a
D. /
答案：A