1. If I have to help my dad with something, I don't come.
2. You shouldn't miss seeing the Opera House when you are in Sydney.
3. If you don't stop swimming in that lake, you will have skin rashes.
4. If you study hard, you will pass the examination.
5. Thu said that all the students would have a meeting the following week.
6. Mi said that she wanted to buy some new pencils.
7. That idea was their idea.
8. Can I borrow one of your pencils?
9. I am standing in front of many students to receive the free film tickets.
10. While he was visiting Cuc Phuong National Park, he discovered many kinds of rare flowers.
11. My brother never goes browsing at the shopping centres.
12. Can you lend me a book?
13. When Minh has free time, he prefers surfing the net to going shopping.
14. Most students don't like having homework during the weekends.