【题目】用“am,is,was, were”填空。
【1】I_____ateachernow. Buttenyearsago, I_____astudent.
【2】He_____alittleboyfiveyearsago, but he _____ at school now.
【3】Where______itlastSunday?
【4】She______atschoolyesterday.
【5】They _______ very excited when they heard the news.