The new bridge over the Jingsha River ________ last year, which makes it very easy to go to the city center．

1. A.
   built
2. B.
   was built
3. C.
   has built
4. D.
   has been built

The new bridge over the Jingsha River _______ last year, which makes it very easy to go to the city center.

A. built                        B. was built        C. has built        D. has been built