Past modals of deduction

Maria wasn't in class last week. Pedro saw her coming out of Cinepolis around noon.

• She must not have skipped class.

• 
  She could have gone to the movies.

• 
  She could have been at the hospital.

A: Daniela recently moved to Texas.

B: That's so strange, I could have sworn I saw her yesterday near Paseo la Fe with her family.

• She would have been seen us.

• That might have been her twin sister.

• She may not have told us the truth.

Julio had a stomachache because he had eaten so many tacos last night.

• He should have been at the hospital.

• He should have taken an Alka seltzer.

• He should hadn't eating so many tacos.

Alan said he took a picture of a huge bear in Chipinque, but no one has seen the photo.

• He may or may not have taken a picture of the bear.

• 
  He might take a picture of the bear.

• 
  He should have take a selfie with the bear.

Melissa is an excellent soccer player, and she scored the most goals for her team last year.

• 
  She might have been the best player on the team.

• 
  She couldn't have scored any goals.

• She may not be on the team.

I saw a bright light in the sky last night. It seemed too big to be a star.

• 
  It must have been a planet.

• 
  It may or may not have been in the sky.

• It couldn't have been a planet.

Fany told her mother that she liked her haircut, but she had a strange expression on her face when she said it.

• She couldn't have gotten a haircut.

• She might have told a white lie.

• She should have telling the truth.

A: Someone is calling you! It says is your brother.

B: My brother's phone is right next to me. It's not him. Check again.

• It must have been her brother.

• It may have been a paranormal experience.

• It couldn’t have been her brother.