第1个回答 2012-02-12
1. In developed countries, people's living conditions is very good; In developing countries, people were very poor. (however)
2. Each year, thousands of tourists browse the Great Wall (passive voice)
3. When she to driving, she found out that her house has disappeared. (the past completed)
4. The scientists explain years there will never be another earthquake.
5. Watching football match up very exciting. (verb timing)