Complete with past participle: I've just _____ (wear) those trousers, I can't wear them again...
I've just worn those trousers, I can't wear them again...
Complete with past participle: Have you ever ____ (learn) the past tenses? I don't think so
Have you ever learnt/learned the past tenses? I don't think so
Complete with past simple: I _____ (choose) to learn English, I don't know why
I chose to learn English, I don't know why