—How much are the two pairs of shoes?

  —They are not expensive. I think fifty dollars ______ enough.

A. is             B. are           C. were           D. was

—How much are the two pairs of shoes?
—They are not expensive. I think fifty dollars ______ enough.

-How much are ________ shoes?

-________ are eighty ________．

1. A.
   the, They, dollar
2. B.
   the, It, dollars
3. C.
   these, They, dollar
4. D.
   these, They, dollars