Grammar LV1 — Quiz — Day 1: The Verb 'to be': am/is/are

1 Choose the correct word: I ___ a teacher.
2 Choose the correct word: She ___ my friend.
3 Complete: They ___ from Bangkok. (am/is/are)
4 Which sentence is correct?
5 Make this negative in one word: 'She is happy.' -> 'She ___ happy.'