1. It takes me 45 minutes to do this exercise
2. It took the children an hour to write this report
3. It took her few days to learn to swim
4. It took him three hours to playing computer games
5. It took us two years to finish this bridge
6, It takes the boys a lot of time to surf the Net each day
7. She spend 15 minutes going to school by bike
8. They spent 30 minutes cooking dinner
9. It took us one hour to learn English every day
10. I spent an hour cleaning the room
11. It is very interesting to learn English
12, It is very important to keep the environment unpolluted
