You might want to add the rest of the possible answers from your homework next time.....
ial
ial
The letter that most frequently comes before the "ial" ending is "t." Examples include words like "special," "initial," and "essential." This pattern is common in English, where "t" often precedes the "ial" suffix.
dial denial Trial
Remove the e, and add -ial.
Yes.
-ial
In short it means 'of' or 'coming from'.
-IAL
what the suffix of material
Partial, facial, superficial, presidential, national,...
D. Ial Upbroadband