1. Global warming has caused many natural disasters.

=> Natural disasters disasters have been caused by global warming.

2. It is Tan’s 15th birthday next week.

=> Tan will be 15 years old next week

3. The noise from the music club is loud, so the residents of the street cannot sleep.

⇒ Because of the loud noise from the music club, the residents of the street cannot sleep.

4. The soil is poisoned because farmers use too many pesticides and herbicides.

⇒  If farmers didn't use too many pesticides and herbicides, the soil would mot be poisoned.

1)Many natural disasters has been caused by Global warming.

2)Tan will 15th next week.

3)Because of the loud noise,the residents of the street can't sleep.

4)If farmers use too many pesticides and herbicides,the soil will be poisoned.