Mysister,aninexperiencedrider,wasfoundsittingonthebicycle_____tobalanceit.
A.havingtriedB.tryingC.totryD.tried
为什么选B?wasfoundsittingonthebicycle不就是相当于…foundhersittingonthebicycle不已经满足了find+宾语+宾语补足语的
怎么又选个B作宾补?
为什么不能选C