11.   After teachers began storing information on Web sites, they began giving secure access to students and teachers, as well.

12.   After roll call, the teacher begins to discuss the Holocaust.

13.   But as the teachers began walking the halls on Tuesday, they found a thick layer of dust in the faculty lounge and in one of the elevators.

14.   But then the student figured it out just as the teacher began to tire.

15.   Earlier this week teachers began enforcing the rule, prompting some students to speak out against it.

16.   Earlier this week, however, teachers began enforcing the rule, prompting some students to speak out against it.

17.   If they miss the deadline, the school portion of local property taxes will become uncollectable and teachers will begin receiving pink slips.

18.   In fact, the teacher herself had begun to notice the need to have more one-on-one conversations with the children.

19.   In February, teachers began wearing white ribbons and a G-clef pin to show their support for Johnson.

20.   Less than two years after he began studying voice, his teacher began sending pupils his way.