1)was writing

2)were having

3)was sleeping

4)wasn’t tidying

5)were cooking

6)were; going

7)was playing

8)were dancing

9)was feeding

10)was drinking

11)was repairing

12)were watching

13)were visiting

14)was cleaning

15)was walking

16)was sending

17)wasn’t smoking

18)was swimming

19)wasn’t doing