To be check - fill the gaps with the correct forms
of to be
1 Sorry, I __________________ late!
2 You __________________ my best friend.
3 That boy __________________ my brother.
4 We __________________ a family.
5 Our class __________________ is very nice!
6 She __________________ my friend.
7 My dog __________________ old and lazy.
8 You __________________ a hard worker!
9 They __________________ my parents.
10 My friends and I __________________ a little crazy.