Ответ:

1 came, were writing

2 phoned, was taking

3 was speaking, took  

4 met, were standing

5 was sleeping, came

6 was cooking, brought

7 came, were sitting

1) came; were writing

2) phoned; was taking

3) was speaking; took

4) met; were standing

5) was sleeping; came

6) was cooking; brought

7) came; were sitting