supply the correct verb form : simple past or past continuous
1.Bill ( have ) breakfast when i ( stop ) at this house this morning
2.As me ( cross ) the street , we ( see ) an accident
3.Tom ( see ) a serious accident while he ( stand ) at the bus stop
1.Bill was having breakfast when I stopped at this house this morning.
2.As me was crossing the street,we saw an accident.
3.Tom saw a serious accident while he was standing at the bus stop.
1. was having .... stopped
2.were crossing...saw
3.saw.... was standing