1. nick was from london, … ? 2. our students like to play basketball, …? 3. we can’t roller-skate, …? 4. my sister must clean this cabinet every morning, …? 5. his puppy doesn’t play with a ball, …? 6. my friends are from boston, … ? 7. their parents went to the cinema last sunday, … ? 8. i can speak english, … ? 9. my daughter mustn’t watch tv, … ? 10. john swims in the river every weekend, … ?

1. nick was from london, wasn't he? 2. our students like to play basketball, don't they? 3. we can’t roller-skate, can we? 4. my sister must clean this cabinet every morning, mustn't she? 5. his puppy doesn’t play with a ball, does it? 6. my friends are from boston, aren't they? 7. their parents went to the cinema last sunday, didn't they? 8. i can speak english, can't i? 9. my daughter mustn’t watch tv, must she?

1. when we ( met) him, he (was going) to the shop. he ( wanted) to buy some food. 2. what were you ( look ing) for when i ( opened) the door? 3. was your daughter ( skat ing) on the pond from five till six? 4. what were they ( laugh ing) at when he ( came) in? - they (were laugh ing) at a funny story. 5. where was he ( go ing) when rain (to begin)? - he (was go ing) to the office. 6. what was she ( play ing) when i ( rang) her up? - she (was play ing) the violin. 7. who (was quarrell ing) at that time? - his friend (was quarrell ing). 8. beth and tom (were watch ing) a tv programme when their mother ( asked) them to help her. 9. did you ( help) your mother while she (was wash ing) up? 10. the scientist (were work ing) in the laboratory when some­body ( switched) off the light. 11. whom were you (talk ing) on the phone to, when i came into the room? 12. jane (was hav ing) a walk in the park when it ( began) to snow. 13. why were you (not  hav ing) classes at nine o'clock? - our teacher (was) ill. 14. yesterday the whole lesson we (were revis ing) grammar. 15. while helen (was tak ing) a shower mother ( washed) the dishes. 16. i (was lay ing) the table when i ( broke) a plate. 17. when i (met) them in the yard, they (were laugh ing). 18. she (did not get) up at six o'clock yesterday. she ( got) up at eight. 19. they were just ( leav ing) the house when we ( arrived). 20. when he ( came) to the station, his friend was already ( wait ing) for him.