Это в зависимости от времени, если Pr. Simple, то употр. в утверд. форме ничего (в 3 лице ед.ч окончание S у глаголов) в вопросительной ставь do (с мест. I,you, we,they) и does (c мест. he, she, it). Ве не употребляется ни в одном времени, только в образовании инфинитива
<span>1. This boy is always late, isn't he?
2. Your grandfather is old, isn't he?
3. Pete's sister is only five, isn't she ?
4. The teacher was not at the theatre, was he ( she)?
5. Your bag is not black, is it?
6. Their flat is large, isn't it?
7. The kitchen was the smallest room, wasn't it?
8. Kate was not lazy, was she?
9. It is 10 o'clock, isn't it?
10. It is Monday today, isn't it?</span>
1.came,i was having dinner
2.returned,i was listening the radio
3.entered,he was drawing a pictures
4.came in,i was doing my lessons
5.aired,she was catching cold
6.met,she was going to office
7.was washing,somebody knocked in the room
8.were dancing,came
9.was washing,broke
10.What were they doing when you saw them?
26 конечно же ведь праздник 25