Ex.1

1.was walking

2.was playing

3.were playing

4.were staying

5.was smelling

Ex.2

1.were having

2.wasn't listening

3.was lying , was eating

4.were smiling , was taking

5.Were you , arguing

6.was talking

Ex.3

1.was doing , met

2.was shining , got up , felt

3.was waiting , was waiting

4.was raining , decided

5.arrived , was playing , were shouting