his homework in time he had to stay up late into the night.A. FinishingB. Having finishe

问题补充：

his homework in time, he had to stay up late into the night.

A. Finishing

B. Having finished

C. To finish

D. To have finished

答案：

A. Finishing

B. Having finished

(答案→)C. To finish

D. To have finished

解析：本题考查非谓语动词。To finish his homework in time不定式作目的状语，D项表示动作已经完成，故选C。