The house (pull down) ______ was built fifty years ago.
举一反三
- Those houses ____were built fifty years ago. (tear down)
- Those houses ________ (pull down) were built thirty years ago.
- The house in ______ we live was built 5 years ago.
- The house in ___________ we live was built 5 years ago. (which / that)
- The house in the front of which there is a big tree was built more than 000 years ago.（)