问题
选择题
There is ______ apple tree in my garden. It's over 10 years old. [ ]
A. the
B. a
C. an
D. 不填
答案
答案：C
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There is ______ apple tree in my garden. It's over 10 years old. [ ]
A. the
B. a
C. an
D. 不填
答案：C