7. Coplete the expressions.a__________ of toothpastea__________ of milka__________ of

7.
1) a tube of toothpaste 
2) a carton of milk
3) a bottle of oil
4) a jar of ointment
 
8. 
1) you should consult a dentist 
2) you should stay in bed
3) you should drink warm milk with honey

9.
What shouldn't people do to protect environment.=People shouldn't dump industrial resources like gas and water.

10. 
What should people do to protect environment.=People should protect plants and animals that is to protect their natural habitats. People should keep the land clean.