— Why didn’t you leave school? It’s already eight o’clock.— Because I my homework yet.A. w

问题补充：

— Why didn’t you leave school? It’s already eight o’clock.

— Because I my homework yet.

A. wasn’t finishing

B. wouldn’t finish

C. haven’t finished

D. wasn’t finished

答案：

A. wasn’t finishing

B. wouldn’t finish

(答案→)C. haven’t finished

D. wasn’t finished

解析：考查情景交际。“你为什么不离开学校？都八点了。”“因为我还没写完作业。”根据yet提示用现在完成时的否定形式。故选C。