1. Are they in year 7? Yes, they are.
2. Are you 11 years old? No, I'm not.
3. Is it a ruler? Yes, it is.
4. Are you and Mary in the same class? No, we aren't.
5. Is he Mark? No, he isn't.
I was doing my homework at 8 o'clock yesterday evening
я делал домашнюю работу в 8 часов вчера вечером
I was running the house at 10.15 yesterday morning
я убирал дом в 10.15 вчера утром
I was having dinner at 7.45 yesterday evening
я ужинал в 7.45 вчера вечером
I was walking with my parents at 5 o'clock last Saturday
я гулял с родителями в 5 часов в субботу
I was sleeping at 4.30 this morning
я спал в 4.30 этим утром
I was cooking my favorite meal half an hour ago
я готовил моё любимое блюдо полчаса назад
1. Are/they are
2. Are/I am
3. Is/is
4. Are/we are not
5. Is/he is not