1. How long does it take you to do your homework? Three hours.
2. How long will it take you to get to Moscow? Three hours.
3. How long does it take your mother to cook dinner? Three hours.
4. How long did it take your friend to do her homework yesterday? Three hours.
5. How long did it take them to put up a tent? One hour.
6. How long does it take you to read a book? A week.
7. How long does it take builders to build a house? A year.