Задайте 5 вопросов к предложению. We have been doing this work for a long time.

ответ: 1. What have you been doing for a long time?

2. Who have been doing this work for a long time?

3. Have you been doing this work for a long time?

4. How much time have you been doing this work?

5. We have been doing this work for a long time, haven't we?