There are many interesting books_________ , but I'm at a loss which to borrow.

1. A.
   to choose
2. B.
   for choosing
3. C.
   to be chosen
4. D.
   to choose from

There are many interesting books_________ , but I'm at a loss which to borrow.

 A. to choose  B. for choosing  C. to be chosen D. to choose from

There are many interesting books _____, but I’m at a loss which to borrow.

　　A. to choose B. for choosing

　　C. to be chosen D. to choose from

There are many interesting books ________, but I’m at a loss which to borrow.

　　A．to choose

　　B．for choosing

　　C．to be chosen

　　D．to choose from