___________ in 1910, the museum is almost 100 years old.

1. A.
   Building
2. B.
   To build
3. C.
   Build
4. D.
   Built

___________ in 1910, the museum is almost 100 years old.

  A. Building       B. To build      C. Build           D. Built

___________ in 1910, the museum is almost 100 years old.