1. Peter has been doing his mathematics homework for an hour.
He has done 2 exercises.
2. Chris has been working in Russia since May.
He has already visited 5 Russian cities.
3. Helga Osmond has been acting since she was 14.
She has acted in 5 films.
Общая форма:Yesterday my cat played with a dog(Вчера моя кошка играла с собакой
Отрицательная форма:Yesterday my cat don’t played with a dog(Вчера моя кошка не играла с собакой)
Вопросительная форма:My cat played with a dog yesterday?(Играла ли моя кошка с собакой вчера?)
1) in
2) at, in
3) at
4) at
5) on
6) at
7) in