1. What about going to Ba's village this weekend?
2. He enjoys walking in the rain.
3. I suggest going for a walk.
4. Going out with friends on weekends is interesting.
5. Protecting our environment from pollution is necessary.
6. Going swimming in the river is dangerous.
7. It is exciting to have access to the Internet.
8. It is happy for me to do charity work.
9. Maryam is used to walk to the mosque on Sunday.
10. What about having a party?
11. I spent half an hour to write this letter.
12. It takes her thirty minutes to ride to school.