You will find this map of great_________in helping you to get round London.

A.price                  B.cost                   C.value                 D.usefulness

You will find this map of great ________ in helping you to get round London.

[　　]

You will find this map of great ______ in helping you to get round London.

[　　]

You will find out that this map is of great ________ in helping you to get round London.

1. A.
   price
2. B.
   cost
3. C.
   value
4. D.
   usefulness