Ответ:

2) are --> is;

3) my --> mine;

4) the better --> the best;

5) who --> what;

6) that --> those;

7) is --> are;

8) two waters --> two glasses of water;

9) not --> don't;

10) don't --> doesn't;

11) these --> this;

12) don't --> doesn't;

13) is --> are;

14) has --> have;

15) her --> hers.

Объяснение:

Ответ:

3 that- this

5 who- what