---Do you think he will do me a favor?---As far as I know he is the last one others. He

问题补充：

---Do you think he will do me a favor?

---As far as I know, he is the last one others. He be prepared to give you a hand, though.

A. to help, might

B. helping, must

C. to help , can

D. helping, should

答案：

(答案→)A. to help, might

B. helping, must

C. to help , can

D. helping, should

解析：考查不定式用法和情态动词用法。当名词有序数词修饰时可以用不定式修饰。根据前半句话可知他很少帮助别人，可知第二空为might，他可能愿意帮助你。句意：据我所知，他很少帮助别人。然而，他有可能会帮你。