While I with Lily the school bus came.A. talkB. talkedC. was talkingD. am talking

问题补充：

While I with Lily, the school bus came.

A. talk

B. talked

C. was talking

D. am talking

答案：

A. talk

B. talked

(答案→)C. was talking

D. am talking

解析：句意：当我和Lily正在说话时，校车来了。表示过去正在做某事，用过去进行时。