“Must” for Possibility
Must is also used to show possibility, and it’s used in situations where the speaker is very certain.
Example: He ate 3 pieces of cake. He must like cake.- Он съел 3 куска торта. Он должно быть любит торт.
Example: They worked for 12 hours today. They must be tired.- Они работали 12 часов сегодня. Они должно быть устали.
