Here are the matches for the health problems with the correct advice:

1. I have spots on my face. - **e. Spend less time in front of screens.**
2. I get sunburnt. - **d. Apply an aloe vera lotion and drink lots of water.**
3. I've got flu. - **c. You shouldn't drink cold drinks.**
4. I'm putting on weight. - **b. Eat less junk food and do more exercise.**
5. I have a toothache. My tooth - **a. You should go to your dentist.**

So, the correct matches are:

- 1 ➔ e
- 2 ➔ d
- 3 ➔ c
- 4 ➔ b
- 5 ➔ a