Correct grammar mistakes. 1) i had reading a magazine by 6 o'clock. 2) they have written a test by that time. 3) while he were sleeping, helen phoned him 4) she was play chess at 5 o'clock. 5) the spaceship was launch in 1982. 6) last spring the flood had destroyed half of the town.

1) I had read the magazine by 6 o'clock.
2) They had written a test by that time.
3) While he was sleeping, Helen phoned him 4) She was playing chess at 5 o'clock.
5) The spaceship was launched in 1982.
6) Last spring the flood destroyed half of the town.