1. Because of water pollution, we can't swim in that river.
2. Because of snowy weather, we didn't go out for a walk.
3. Because he is good-looking, he is popular with many girls.
4. Because he was serious sick, he couldn't come to the class.
5. Because there are too much exhaust fume, people have to wear gauze masks in the streets.
6. Because they performed well, hey won the first prize.
7. Because you adviced us, we didn't use that poisonous chemical.
Cấu trúc: Because + S + V và Because of + Noun/Ving
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