There are often ( ______ ) unhealthy chemicals in bottled water than in tap water. These chemicals come from the ______ in the bottles.
Most bottled water is ( ______ ) tap water. Both tap and bottled water come from rivers and ______ .
Bottled water is ( ______ ) expensive than tap water. It costs almost ______ times more.
Putting water in bottles ( ______ ) a lot of water. Water is used to ______ the bottles.
( ______ ) percent of plastic bottles go into the trash. This is very ______ for our planet. 空1选项：1、fewer2、more空3选项：1、cleaner than2、the same as空5选项：1、more2、less空7选项：1、saves2、wastes空9选项：1、182、80