Ответ:

Unless it's Saturday night, you shouldn't sleep late.

If you have a headache, you should take an aspirin.

If you are on holiday, you can sit around and do nothing.

If you don't have time to make preparations, you shouldn't throw a birthday party.

If you are the one to blame, you should apologize.

You should never eat too many sweets. You shouldn't give up when studying English. You should brush your teeth regularly. You shouldn't break the rules.

If you are blamed, apologize.

If your friend spreads rumours, confront them.

If you sit around, you will waste your time.

If you don't separate the have-tos from the want-tos, you will get overwhelmed.

If you don't learn to cooperate, you will have difficulty working in a team.