it was about 100 years ago

it was about 100 years ago it was about 20000years ago that the Chinese first made pape It was about 600 years ago that the first clock with a face 1.shenzhen was very small about thirty years ago but it is m it was about 500 years ago _____ the dream came true It was stolen twenty years ago when About ten years ago when I was at Unviersity Our Longmen Building was built about a hundred years ago. It was ten years ago ___ he joined the army It was ten years ago ___ joined the army it was 25 years ago he graduated from harvard university It was bought many years ago by my grandfather.