It is necessary that our drinking water _____ cleaner.
举一反三
- 2、What do basic human need contain? A: Clean drinking water,food and shelter. B: Purified drinking water,food and shelter. C: Purified drinking water,food and an education. D: Clean drinking water,food and an education.
- Is bottled water cleaner than tap water? (8.2.1第一个视频） A: Yes B: No C: Sometimes, sometimes not
- Which is NOT the advantage of drinking more water?
- Drinking water of Saudi Arabia comes from ?
- Who had to mix with water before drinking ______.