Which verb form is used to indicate present perfect tense?
verb or verb + -s
will + verb
have + verb + -ed
have + verb + -ing

i think its have +verb+ -ed. hope this helps!

The correct answer is have + verb + -ed.

This tense refers to an action that occurs in the past but still has not finished, therefore it continues to the present time e. g. She has lived here all her life. This tense is not specific about the time when happened.

i don't really know the circumstances. i personally think not due to it not being fair for all parties and how hated i'd become if i thought it was a good thing.

it is the background information on the characters and setting explained at the beginning of the story. the exposition will often have information about events that happened before the story began. the exposition is often the very first part of the plot.