Translate the following sentences into French.
11. Hello, doctor. I am sick.
12. What is the matter?
13. Yesterday, I had a fever.
14. Now I am coughing.
15. And I have a runny nose.
16. Ah, you have the flu.
17. I am going to write you a prescription.
18. I would also like to take your temperature.
19. I am prescribing a cough syrup.
20. You should buy some tissues.