问题
选择题
This is______ European snake and that is ______ African snake. [ ]
A. a; an
B. an; a
C. a; a
D. an; an
答案
答案：A
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This is______ European snake and that is ______ African snake. [ ]
A. a; an
B. an; a
C. a; a
D. an; an
答案：A