Busied is the past participle of busy.
Past perfect is had + past participle. The past participle of have is had so the past perfect of have ishad hadWe had had a busy week so we slept in.
The past participle of "am not" is "have not been."
Busied is the correct past tense of "busy" when it's used as a verb. Preparing is the present participle of "prepare".
The past participle of "do" is "done." The past participle of "have" is "had."
The past tense of "have" is "had," and the past participle is also "had."
The past and past participle for "buy" is "bought."
Being is the present participle. The past participle is been.
The past participle is thought.
Eating is the present participle; eaten is the past participle.
"Did" is the past and "done" is the past participle.
The past participle is had.
The past participle of "do" is "done."