I

1. the house collapsed after the children had left

2. $1.t triliion was caused in damage by natural disaster between 2000 and 2012

3. if our seas weren't seriously polluted, fish and other marine creature wouldn't die everyday 

4. we will visit the....park as soon as we go to have ...bar

5. a training session how to protect themselves in some natural disasters was taught to people after the lastest landslide in sapa

II

1. tom said that his brother wanted to become an austronaut in the future 

2. nick said that he didn't know who invented the radio

3. dave said that reading on astronomy was one of his favourite daily activities 

4. my brother said that in the very near future, there would be flying cars

5. my teacher said that the technology advances had made people's life easier and more comfortable