This is second~!

Congratulations on being promoted!
He decided not to go to the year-end party.
The teacher was pleasantly surprised to know her class was the first in Math.
You need to boost your performance to finish your task.
We have to go over our project as a whole.
They already started prep work yesterday.
I think she need to reconsider before joining the group work.
I will finish it somehow, so don't worry.
I'm flattered by everyone's compliment.