Stayed.
A participial adjective is a present or past participle that is used to modify a noun.
preached
chided (past tense) and chidden (past participal)
The simple past tense is chose. The past participle is chosen.
Yes, "included" is a past participle of the verb "include," which can function as part of a prepositional phrase in a sentence.
The past participle form of "sing" is "sung."
Taught is the past participle of teach. infinitive: teach past: taught past participle: taught
The past tense of "teach" is "taught." For example, "She taught English to her students yesterday."
I am very sure the past of teach is taught.
No, it is not. Frustrated is the past tense and past participle of the verb (to frustrate) and may be a verb form, participial, or adjective.
No, it is not. It is the past tense and past participle of the verb to purchase. It can be a verb form, a participial, or an adjective (bought, paid for).