1 . These chemicals led to severe water quality issues, ___________ (cause) a decrease in the number of fish species. (所给词的适当形式填空)

2 . Huge waves crashed into the coasts, ________ (cause) serious damage. （所给词的适当形式填空）

3 . Because of global warming, the ice at the poles is melting, ________ (cause) the sea level to rise. (所给词的适当形式填空)

4 . Ways must be found to deal with the constant noise _______ (cause) serious health problems. (所给词的适当形式填空)

5 . It rained cats and dogs, ________ (cause) terrible flooding. (所给词的适当形式填空)

6 . Every year, 10,000 persons were killed by the accidents _____ (cause) by drunk driving. （所给词的适当形式填空）

7 . The storm left, ________ (cause) a lot of damage. (所给词的适当形式填空)

8 . The storm struck the area, ________ (cause) a lot of damage. (所给词的适当形式填空)

9 . It rained heavily in the south, _________(cause) serious flooding in several provinces. (所给词的适当形式填空)

10 . The past 20 years has seen a dramatic increase in the number of extreme weather events ________(cause) largely by rising global temperatures. (用所给词的适当形式填空)