1 Are you tired today?

2 The sea is very warm.

3 I am not tall.

4 The books are on her desk.

5 Our friends are not at home at the moment.

6 Are you ready for lunch?

7 Tonic is a nice dog.

8 She is at the gym now.

1.is

2.is

3.isn't

4.is

5.isn't

6.is

7.are

8.isn't

9.is

10.aren't

11.are