she is good at playig the violin.she ____ to play it when she was six years old.

问题描述:

she is good at playig the violin.she ____ to play it when she was six years old.
A.would be able B.was able C.has been able D.is able

B.was able分析一下。。她六岁时就会拉小提琴。会做某事用 be able to,过去时,所以用 was able to