The teacher _____________________ ended the lesson to take all of the students outside for some fresh air. None of the kids saw it coming! Mrs. Turner was usually a stickler for her lessons.

After we missed the bus the third time, our homeroom decided that serious _____________________ in the schedule were needed.

My teacher's instructions about the paper were ___________________________; nobody knew what to write.

The night before the big game, I was in a state of ______________________________.

to officially put an end to

sudden or curt

anxiety; the fast stirring of a liquid

change from a previous norm

open to more than one interpretation; unclear