- Your eyes are red and swollen this morning. You must have cried all night
- It’s all my fault, I admit . I should have checked the doors before going to bed.
- Rachida shouldn't have cheated in the exam. Now She has to wait for five years to sit forit again
- My brother can't have stolen the money from your purse. He was at work at that time
- He bought a farm cheaply and sold it later at a higher price. He must have made a lot of money. - Your business trip cost the company a fortune. You shouldn't have stayed in a five-star hotel. You could have opted for a less expensive one. - My friend must have been very busy, otherwise he would have telephoned me. - “You should have helped your mother . I see no reason why you didn’t” Mr. Simpson said to his daughter