#3c. 1-c, 2-d, 3-a, 4-b.
#1c. 1) It is important to be healthy because if you do not care of your health, you cannot study or work properly.
2) We can stay healthy by doing exercises, eating healthy food and sleeping well.
#3a. 1-c, 2-b, 3-a, 4-e, 5-d.
#3b. 1) Flu is a serious illness. People get it with the virus.
2) It is very easy to get. When ill people cough, the virus goes to the air.
3) Signs and symptoms: a high temperature, pain in the body, a headache, a cough, a sore throat, low energy and a runny nose.
4) We should stay at home, drink a lot of hot drinks, use nose drops and visit a doctor.
