--Did the book give the information you needed?

--Yes．But I had to read the whole book _________ it．

A．to find            B．find          C．to finding           D．finding

--- Did the book give the information you needed ?
--- Yes. But __________ it, I had to read the entire book.

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

--- Yes. But __________ it, I had to read the entire book.

A．to find            B．find              C．to be finding       D．finding

–Did the book give the information you needed?
–Yes. But _____ it, I had to read the entire book.

---Did the book give the information you needed ?
--- Yes. But __________it, I had to read the entire book.

从所给的四个选项中选择最佳答案

—Did the book give the information you needed?

—Yes, but ______ I had to read it entirely.

[　　]

A．for finding it　　　B．to find it

C．finding it　　　　 D．by finding it