1. There was $1.7 trillion in damage caused by natural disasters between 2000 and 2012.
2. If our seas weren't seriously polluted, fish and other marine creatures wouldn't die everyday.
3. We will go to have some drinks in that famous bar as soon as we visit the Emancipation park.
4. I had planed my trip to England by the time they invited me to travel to Los Angeles with them.
5. Many education posters was displayed on the street by the local government  to encourage people to protect the environment.