1. Helen ... (to wash) the dishes for fifteen minutes. 2. Sam ... (to drive) a car for five hours now. 3. Molly... (to paint) this picture for three days now. 4. The wind... (to blow) since yesterday. 5. My grandfather ... (to collect) coins since he was a boy.

Ответ: 1. has been washing, 2. has been driving, 3. has been painting, 4. has been blowing, 5. has been collecting

1. Helen has been washing the dishes for fifteen minutes. (Хелен моет посуду уже пятнадцать минут.)
2. Sam has been driving a car for five hours now. (Сэм водит машину уже пять часов.)
3. Molly has been painting this picture for three days now. (Молли рисует эту картину уже три дня.)
4. The wind has been blowing since yesterday. (Ветер дует со вчерашнего дня.)
5. My grandfather has been collecting coins since he was a boy. (Мой дедушка собирает монеты с тех пор, как был мальчиком.)

Ответ: 1. has been washing, 2. has been driving, 3. has been painting, 4. has been blowing, 5. has been collecting