Question

помогите пожалуйста пожалуйста пожалуйста пожалуйста до завтрашнего дня пожалуйста​

Answer 1

1. The scientist had been working at the experiment for a year when the problem was solved.

2. We had been packing our things for two hours when it was time to go to the railway station.

3. The young man had been working for two years at the laboratory when he decided to enter the university.