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V/
1. Because Johns forgot his umbrella, he got wet.
2. I went to bed early because I felt tired.
3. She performed well, so she won the first prize.
4. She learned hard, so she got high marks on her tests.
5. They got wet because they didn't bring along the raincoat.
6. Since the weather was really bad, we decided to postpone our camping.
7. Jane suggested going to Ben Thanh market this afternoon.
8. He suggested visiting the museum after lunch.
9. Jane suggested John should put a better lock on the door.
10. She suggested Tom should fix the dripping faucet.
11. Shall we buy energy saving bulbs?
12. I'm looking for my key.