1) celebrated / were / came / was playing /
were dancing
2) is playing
3) like
4) looked / was raining / were hurrying
5) what were you doing / was having
6) came / saw / were (или was) sitting / was reading / lives
7) Where were you / was ringing / answered / was / was reading / didn't hear
8) what were you doing / was working / was / didn't see
9) was working
10) was raining
11) Where is your sister / is doing