The exercise focuses on using modal verbs of possibility in the past tense to fill in blanks.
Could,
might,
were or was,
Have finished,
had stayed,
couldn't have been,
hadn't been,
hadn't covered,
This exercise focuses on using modal verbs of possibility in the past tense to fill in the blanks, indicating likelihood or possibility of events that occurred in the past.
https://brainly.com/question/36906526