Thus is not a verb and does not have participle forms.
The past participle of do is done. The past participle of have is had.
The past participle of am is been. Not does not have a past participle
For is not a verb and thus does not have a participle. For can only be used as either a preposition or a conjunction, assuming that you're referring to English.
What is the past participle of do
The past participle of have is had....:) I have had...
The past participle is had.
The past participle is willed.
The past participle is been.
Being is the present participle. The past participle is been.
The past participle is thought.
To isn't a verb and so doesn't have a past participle. The past participle of be is been.
The past tense and the past participle is "answered".