Объяснение:
1) Did he clean the room yesterday?
2) Did she wash the bike yesterday?
3) Did they play tennis yesterday?
4) Did she help her mother yesterday?
5) Did they watch TV yesterday?
теперь указаное задание:1) she played basketball, didn't she?
2) he cleaned the room yesterday, didn't he?
3) They played tennis yesterday, didn't they?
4)she washed bike yesterday, didn't she?
5) she helped her mother yesterday, didn't she?
6) they watched TV yesterday, didn't they?
Переводится как, например
2) Он убрал свою комнату вчера, не так ли?
Как сочинять такие предложения:
Переписываем предложение (l am 15) потом ставим запятую и добавляем окончание
am not l, isn't, aren't, didn't в зависимости от времени. и получается предложение : I am 15, am l? (мне 15, не так ли?"