Contoh soal nesessity and obligation

obligation(kewajiban)
kiki : mira!wait mira!
mira : uh? *stoping her cycle*
hey kiki whats happen?
kiki : dont you remember?you have a.
promise with me that you will go to.
school with me!
mira : oh my god!! I really sorry about that
I was hurry ,mr rudolph dog's is catching.
me.
kiki. : then you leaving me? you make me so.
tired I'm running behind you and calling
you but you're so fast!!
mira. : I'm sorry it will be the last. lets go to school now

necessity(keperluan)
annisa : hello ridha!hello asyifa!
ridha : hello dear....
asyifa : what can we help you?
annisa : um... exactly I want to talk with asyifa.
for a moment can I?
ridha. : dont worry just talk with her go ahead
annisa : okay, syifa. ..........*whispering*
asyifa. : thanks for your information nisa
annisa : youre welcome,bye annisa, bye ridha