1) Alan has won all the prizes. He must be clever.
2) Paul hasn`t had any breakfast. He must fell hungry.
3) She`s seeen that film 8 times. She must like it.
4) Sally isn`t at school. She can be ill.
5) He looks very angry. He can`t be pleased.You must clean your hands before eating. 
You must listen to your mother. 
You must put on a hat in winter. 
You must visit a doctor tomorrow. 
You must switch off the radio before leaving the house.