Luke was a human. Like most humans, he learned from his parents.  He was mortal, but he could preserve himself by doing what? - ocean - write - smile - die - think critically  The best answer is
write

If you ate some spicy food, what could happen to you? - medium - illness - throwing up - heartburn - sleepiness  The best answer is
heartburn

Joe didn't remember to tell Marsha something important before she left home, so he spent an hour desperately doing what? - problems - writing down - being prepared - phoning - panicking  The best answer is
phoning