3. Choose the best option to complete each sentence. Circle A, B, or C.
1. Environmental pollution has ___________ to lots of health problems.
A. caused B. led C. made
2. ___________ industrial waste, many fish cannot survive.
A. Because B. Since C. Because of
3. Oil spills from cargos and ships have ___________ many animals and plants die.
A. made B. caused C. resulted
4. This film is rated 18+ because there are too many ___________ scenes.
A. funny B. violent C. entertaining
5. ___________ effects created an amazing world in the movie, it looked so real!
A. Incredible B. Moved C. Special