1) The wind (blow) hard when the ship (sink)
2) The sun (shine) when we (go) on a picnic
3) When world war II (break) out Tom's parents (live) in Germany
4) When I (enter) the office, the office boy (sleep)
5) Mary (fall) while she (get off) the bus
Answers & Comments
1) The wind was blowing hard when the ship sank
2) The sun was shining when we went on a picnic
3) When world war II broke out Tom's parents were living in Germany
4) When I entered the office, the office boy was sleeping
5) Mary fell while she was getting off the bus