1.were drinking,came
2.was walking,passed
3.was thinking,fell
4.listened
5.entered,was writting, were coping ,
6.were getting,began
7.was having
8.came,was doing
9.what were you doing
10.was going
11.were sleeping, went
12.was reading,came,sat
13.was walking,passed
14.was looking,saw
15.were answering,entered
16.rang,was sleeping
17.was watching,fell
18.came,was doing
19.was going,met
20.rang,was helping