While hethe bus, hea book.A. was waiting for, readB. waited for, was readingC. was waiting

While he the bus, he a book.
A. was waiting for, read
B. waited for, was reading
C. was waiting for, was reading
D. waited for, read

A. was waiting for, readB. waited for, was reading(答案→)C. was waiting for, was readingD. waited for, read解析：考查连词：While 当……时候，动词应用延续性动词，句意：当他等公交车的时候，他正在读一本书。根据语境这两个空表示的都是过去某一时刻正在进行的动作，所以选C。

这下我知道了