I, 1.Many rivers and lakes are poisoned.Factoríe produce waste and pour it into rivers and lakes. =>Because =>Because of 2.They provided food then cleared up the debris. =>After they  3.The local people have to use water from the polluted river.They don't have enough fresh water. =>If 4.I'm not you,but I think you should recycle these plastic carrier bags. =>If I 5.All flights had to be cancelled as a rerult of the pilots' sudden strike. (so) => 6.You have to keep quiet if you want to stay here. =>She told me that II, 1.Water pollution/contamination/bodies/water/such as/lakes/rivers/oceans/groundwater. 2.America/celebrate/Thanks giving Day/Forth Thursday/November/since 1864/?/ 3.Scotland/famous/its rich culture/well/its amazing/natural beauty/./ 4.The Statue/Liberty/New York/is/monument/which/symbolize/freedom/./

I.

1. Because factories produce waste and pour it into rivers and lakes, many rivers and lakes are poisoned.
2. After they provided food, they cleared up the debris.
3. If the local people have to use water from the polluted river, they don't have enough fresh water.
4. If I were you, I think you should recycle these plastic carrier bags.
5. All flights had to be cancelled as a result of the pilots' sudden strike, so passengers were left stranded.
6. She told me that I have to keep quiet if I want to stay here.

II.

1. Water pollution contaminates bodies of water such as lakes, rivers, oceans, and groundwater.
2. Does America celebrate Thanks giving Day on the Fourth Thursday of November since 1864?
3. Scotland is famous for its rich culture as well as its amazing natural beauty.
4. The Statue of Liberty in New York is a monument which symbolizes freedom.