What do the words partial, palatial and potential have in common ?

The all have the same suffix of -tial.

Explanation:

This bascially means related too.

1) I have no idea. I've never met her.

2) Yes, we haven't had any problems so far,

3) Yes, I haven't eaten much today.

4) Yes, but I haven't played for ages

5) Yes, it's the best vacation I've been on for a long time.

6) I don't know. I haven't read it.

7) I have no idea. I haven't been there.

8) Yes, it's the second time it's happened this month.

9) I don't know. I've never tried it.

10) Again? He's been late everyday this week.

11) I don't know. I've never seen her before.