----Did the reference give the information you needed?----Yes but it I had to read it en

问题补充：

----Did the reference give the information you needed?

----Yes, but it, I had to read it entirely.

A. to find

B. having found

C. finding

D. find

答案：

(答案→)A. to find

B. having found

C. finding

D. find

解析：本题考察的是不定式的一个重点用法：不定式在句中做目的状语。句义：—参考书里给了你需要的信息吗？—是的，但是为了找到这些信息，我不得不把它完全读了一遍。根据句义说明A正确。