rewrite
1.    People used oil lamps years ago.

- People ……………………………………….

2.    When did they open that hospital?

- When ………………………………………………………

3.    The atmosphere protects the earth from harmful radiation from the sun

- The earth …………………………………………………..

4.    Someone will tell her which bus to catch.

- She ………………………………………………………….

5.    Someone broke into the house.

- The house………………………………………………………..