问题
选择题
My sister, an inexperienced rider, was found sitting on the bicycle _____ to balance it. [ ]
A. having tried
B. trying
C. to try
D. tried
答案
答案：B
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My sister, an inexperienced rider, was found sitting on the bicycle _____ to balance it. [ ]
A. having tried
B. trying
C. to try
D. tried
答案：B