Answer:
They should put, weddings, party's, Important exams or test, upcoming vacations, and appointments, and if if they have something planned for a evening.
Explanation:
These events mentioned are important, because when you look at your personal calendar, you will know what activities you will be doing, and you will remember to be prepared for them ahead of time.
The kind of memory aid the passage "You will be my friend to the very end." is a definition of a word. I hope my answer has come to your help. God bless and have a nice day ahead!<span>
</span>