Ответ:
1. She was sitting on the bench and waiting for somebody.
2.She met helen when she was walking along the street.
3. We were doing our homework from 5 till 8 o’clock yesterday.
.4. At 8 o’clock he was collecting his car
5They were playing football from 12 till 2 yesterday
6 He was playing tennis at 5 o’clock yestreday..