Quest 7. Вставь правильный предлог: at, in, on, for, since

Решение:

1. She has been waiting for the bus for 20 minutes. (Указан период времени)
2. I usually get up at 7 o'clock in the morning. (Указано точное время)
3. They have lived in this house since 2010. (Указана точка отсчета во времени)
4. Let's meet on Friday evening. (Указан день недели)

Ответ: 1. for; 2. at; 3. since; 4. on.