1.Use the verb TO BE in present Indefinite
1)He... a good student
2)They ...old friends
3)I... a teacher
4) John .... absent from class today

2.Use the verb TO BE in Past Indefinite
1) Ann... absent from school yesterday
2)The exercises in the last lesson ...difficult
3)She... in the same class as Nick last year
4)We... tired after our long walk
5)The weather yesterday...very warm
6)There...a lot of students from class yesterday
7)I... hungry after so many exercises
8)I ... busy all day yesterday
9) We...good friends for many years