Hello there Paul,
Thank you for submitting your homework. I'm glad to know about this activity that you like but please be careful when riding on your skate board.. Please take note of your sentence correction.. Thank you and see you in our class.^_^
I like to do ride a skate,because the skateboard is fun and many people like it.
Correct: I like to ride on a skateboard because it is fun and many people likes it.
** Remove "do" to your sentence because you had "ride" as your action word.
** Be careful on your sentence construction so your sentence could easily understand.