if you have a new idea ,you should e___ at once

if you have a new idea ,you should e___ at once if you have a fever ,you should drink e___ water If you have a c____,you should see a doctor at once. You should a doctor at once If you have a toothache,you should If you have a stomachache,you should If you want to stay healthy ,you should take e___ . if you -------------(have a cold),you should se a doctor at you should (给他打电话)at once What should you do if you have a bad cold? What should you do if you have a fever? If you have a sore back,you should...