1) was cooking , went out, burned
2)hurt/was skating
3)entered, were feeding
4)was visiting/ bought
5)Started, bathing
6)was having
7)came in/ was doing
8)what were you doing
9)was going home
10)you were sleeping when i went out
11)was reading, came , sat
12)was walking, passed
13)was looking, saw
14)were answering, entered
15)were drinking, came
16)was walking