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6) were travelling

7) was playing

8) is

9) arrived

10) was reading

3

1) were having, rang

2) met, was working

3) left, was shining

4) were laughing, came

5) were sleeping, were watching

6) started, was coming

7) opened, was raining

8) was sunbathing, was swimming

9) heard, was talking

10) was taking, ate

11) was texting, arrived

12) broke, was skateboarding

13) was listening, was cooking

14) was driving, stopped

15) noticed, was watching

16) fell, was painting

17) were waiting, were surfing

18) became, was travelling

19) were you doing, heard

20) wasn't feeling, talked