I have worked in school since 2008. Я работаю в школе с 2008 года.
I have been running for 2 hours. Я бегу уже два часа.
She has watched TV for 3 hours. Она смотрит телевизор в течение 3 часов.
I haven't seen my aunt for a long time. Я не видел мою тётю в течение долгого времени.
He has lived in London for two years. Он живёт в Лондоне 2 года.
Ann has studied English for three years. Энн изучает английский 3 года.
I have known him since June. Я знаком с ним с августа.
My brother has helped me since 11:00 this morning. Мой брат мне с 11 утра.
My sister has been working in the airport since February. Моя сестра в аэропорту с февраля.
I have done my homework for 2 hours. Я делаю домашнюю работу уже 2 часа.
Объяснение:
dog - dogs
house - houses
balloon- balloons
CD - CDs