Câu 1 : 

Yes, because sleep helps us relax at the weekend after a busy and tiring day, helps us try to relax our mind and feel comfortable . 

Câu 2 : 

Yes, because fruit has a lot of vitamins and organic substances, fruit is very good for health, increasing resistance and health for yourself.

Câu 3 : 

This depends on each person, if the place is clean you can enjoy it again to avoid waste, but if the place is dirty, you should not eat it again because it will be harmful to the body.

- Yes, because it makes us unusual stress reduction, eliminates toxic proteins, help healthy brain

- No, because they lack the proteins found in meat, fat in oils, fats and vitamins A

- I'll toss it, because then any food was contaminated when we eat could be food poisoning