You walk in class, noticing there's a substitute. You're confused, because your teacher never said they would be gone today. You don't give it much thought, and take your seat.

"Hello class, I'm Mr Lopez. I'll be your substitute for the next, he checks his paper 2 weeks. Any questions?"

You are shocked when you hear he'll be here for 2 weeks. You become curious about why your teacher won't be here, but you go on with class.