***Answer:
1. what do you do at Tet?
-- I get lucky money and visit my grandparents.
2.what should yo do when you have a toothache?
-- I should take pain medicine and go to the dentist.
3.what shouldn't you do when you have a backache?
-- I shouldn't lift heavy things .
4. why shouldn't you touch the stove?
--Because It will burn your hands.
***Stranslate :
1.Doesn't run down the stairs.
2.Doesn't play with sharp objects.
3.He has an earache so he doesn't hear this.
4.My mom doesn't know what the problem is but she has a very high temperature and headache.
5.My child has a fever and he can't go to school.