____jim was mending his bike ,lin tao was repairi

____jim was mending his bike ,lin tao was repairi

这道题的正确答案确实是C, when, while, as三者都有“当...的时候”的意思，但又有细微的差别。
when的关键点就是动作非延续性。
I was cooking when someone knocked the door. when引导的句子，动作是非延续性的。
while的关键点就是强调主从两句的动作同步发生且持续。
I was cooking while my brother was watching TV, 这个时候，用while才能体现两个动作同步发生。
as更多带有中文”随着”的意味，两个句子间多少有一点相关性。
如
I watched with fascination, as this ant dragged a giant cricket to its nest. 当事人“我"watched with fascination是由于看见蚂蚁居然能拖动一只蛐蛐。

回到原文，mending bike和repairing radio明显是延续性的动作而且同步发生，所以选C最为恰当。

A

A When追答保证真确，专业解答

C WHILE...............................

c while
表示两种不同动作的同时性。