Seniors!

Natallie and Sunita were astonished by my presence.
They thought I shouldn't know
what seniors are making!
(i actually shouldn't.)
Sarah settled them down by saying
"He's okay"
"Yes.. I am okay", I thought.

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You see those seniors making something ,but you don't know what it is!
I know, but I don't have to tell you:D
(because you are gonna know what it is anyway)