It was the second time that I_______of the changes of the timetable

I can’t quite remember ________ I was taken to Beijing.

What does Jack do in that company—— I’m not sure. He ________ be a salesman.

e a promise ________he earned money, he would build a new school to help develop education.

下列句子中加点词语不存在活用现象的一项的是（ ）