PRESENT: AM, IS, ARE

> A1 exercises - affirmative: 1

> A1 exercises - negative:

> A1 exercises - questions: 1, 2

> A1 exercises: 1, 2, 3, 4, 5

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11

> More exercises

PAST: WAS, WERE

> A1 exercises: 1, 2, 3, 4

> More exercises