问题
选择题
We can see _____ old bike _____ the tree. [ ]
A. a; under
B. the; at
C. a; on
D. an; under
答案
答案：D
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We can see _____ old bike _____ the tree. [ ]
A. a; under
B. the; at
C. a; on
D. an; under
答案：D