1.
2) Did they have a party? 3) ate 4) was 5) didn't wash up 6) forgot 7) Did you see..? 8) saw.. 9) didn't watch 10) spoke 11) Was I on TV?
2. 2) were watching 3) wasn't eating; I was reading 4) Was Lily dancing...?
3. 2) made... I arrived
3) she was having a shower when I rang her
4) didn't live when I met him
5) it was raining; didn't want
6) was waiting; got to work
4. 2) left 3) bought 4) invited 5) brought 6) started 7) rang 8) were 9) heard 10) drove 11) told
5. 2) communicate 4) ambitious 5) didn't 6) illegal 7) impossible 8) dangerous 10) unfair 11) industrial