I'm sure that she didn't feel any sympathy for him. SHE...
She should have felt any sympathy for him.
She may not have felt any sympathy for him.
She can't have felt any sympathy for him.
It was a very big mistake that the American citizens elected such a racist president. THE AMERICAN CITIZENS...
The American Citizens must have elected such a racist p
The American Citizens may have elected such a racist p
The American Citizens shouldn't have elected such a racist p
My granny wanted to donate her money to charity, but the burglar stole everything. MY GRANNY...
She would / should have saved the money in the bank.
She might have save the money in the bank.
She would / should have save the money in the bank.
It was wrong of George to get involved in the fight. GEORGE...
George should have gotten involved in the fight.
George shouldn't have gotten involved in the fight.
George can´t have gotten involved in the fight.
It's possible that Julo volunteered in the animal shelter, but I'm not sure. WINSTON...
Julio must have volunteered in the animal shelter,
Julio may/might have volunteered in the animal shelter,
Julio can have volunteered in the animal shelter,
Mr. Been didn´t pass the admision exam.
He must have studied and practiced more.
He shouldn´t have studied and practiced more.
He could / should have studied and practiced more.
It was wrong of you to shout to that street vendor. YOU...
You can´t have shouted to that street vendor.
You should have shouted to that street vendor.
You shouldn't have shouted to that street vendor.
I'm certain that the man didn´t commit suicide. THE MAN...
The man can´t have committed suicide.
The man mustn´t thave committed suicide.
The man shouldn´t have committed suicide.
I lost my cellphone. Probably I left phone in the office.
You should left your cellphone in the office.
You may / might left your cellphone in the office.
You may / might leave your cellphone in the office.
She was falling asleep in class. Probably she was studying hard for the final exam.
She can´t have been studying for the exam.
She must have been studying for the exam.
She might / may / could have been studying for the exam.
Maybe your dad went to the contest. YOUR DAD...
Your dad might/may have gone to the contest.
Your dad should have gone to the contest.
Your dad must have gone to the contest.
She didn´t arrive on time to the meeting. She is very punctual.
She must have had a problem at home.
She could have have a problem at home.
She shouldn´t have had a problem at home.
Maybe she was sick on Tuesday. SHE...
She might/may has been sick on Tuesday.
She might/may have been sick on Tuesday.
She must have been sick on Tuesday.
I'm sure that the police arrested the buglar. THE POLICE...
The police mustn´t have arrested the buglar.
The police must have arrested the buglar.
The police should have arrested the buglar.