It’s said that the world’s supplies of oil ________ up with the development of industry and the increase of cars．

1. A.
   are being used
2. B.
   are using
3. C.
   have used
4. D.
   have been used

It’s said that the world’s supplies of oil        up with the development of industry and the increase of cars.

       A．are being used      B．are using             C．have used            D．have been used