Present Pecfect

I ____________________ teacher for fifteen years.

Past participle of "begin"

_______ he ______________ all the letter?

The accountants ____________________ for prepared the balance

Past participle of "file"

She ____________________ the formal clothing

Has the account worked in the bills?

Perfect tense gives the idea that something happens or is happening before something else.

The past present participle is formed by adding "ed" to the verb.

The ending of the past participle is "ando, endo, iendo"