A8. Obligation and necessity: We use ‘must’ to say that it is necessary to do something. (e.g. You must stop at a red light. Everyone must bring something to eat. You can wear what you like, but you must look neat and tidy. I’m sorry, but you mustn’t make a noise in here.)
a. We use ‘had to’ for this if we are talking about the past. (e.g. Everyone had to bring something to eat. We could wear what we liked, but we had to look neat and tidy.)
Idiom 365
High On The Hog: living in luxury with a lot of money.
Example: They are living very high on the hog after they got the jackpot.