I paid only 5 pounds for the book , _______I expected it would cost.

1. A.
   not as many as
2. B.
   not so much as
3. C.
   cheaper than
4. D.
   not so expensive

I paid only 5 pounds for the book , _______I expected it would cost.

A. not as many as                          B. not so much as    

C. cheaper than                            D. not so expensive

I paid only 5 pounds for the book , _______I expected it would cost.

I paid only 5 pounds for the book , _______I expected it would cost.