We must learn to live together as brothers, or we will perish together as fools.

Seeing that you're not surprised, I think you must have known.

I must admit that I snore.

Teachers must get tired of rectifying the same mistakes over and over again in their students' papers.

We must learn to meet adversity gracefully.

When we borrow money, we must agree on the conditions.

There are 1000 movies that one must watch before dying.

We are what we pretend to be, so we must be careful what we pretend to be.

We must think about friends.

You must work more.

You must practice grammar.

You must keep your room clean.

You must take off your hat in the room.

You must help her, and soon!

You must not take advantage of her innocence.

You must apologize to her, and that at once.

You must be careful not to make him angry.

You must give him up for dead.

You must not look upon him as great.

You must take his age into account.

You must pay attention to his advice.

You must allow for his youth.

You must pay attention to him.

You must make allowance for his lack of experience.

You must compensate him for the money he lost.

You must be a fool.

You must study hard.

You must not come in.

Must you work on Sunday?

You must go home at once.

You must be a late riser.

You must have stayed up late.

You must be back on Sunday at the latest.

You must build up your courage.

You must cultivate your mind.

You must not lose sight of your goal in life.

You must clear the table.

You must account for your neglect of duty.

You must work hard in order not to fail.

You must cut down on extra expenses in order to live within your means.

You must share your jobs with others.

You must account for your conduct.

You must perform your duty.

You must do it yourself.

You must admit that you are in the wrong.

You must control yourself.

You must face the facts.

You must employ your capital well.

You must do as I tell you.

You must learn to obey instructions.

You must do your best.

You must not go out today.

You must do as you are told to do.

You must make up your mind, and that at once.

You must go through with your plan.

You must judge for yourself.

You must live up to your principles.

You must come back before nine o'clock.

You must go up the hill.

You must form regular habits.

You must act in accordance with the rules.

You must know you're faced with a crisis.

You must not be absent from school.

You must be mindful of your family responsibilities.

You must not tell a lie.

Being a teacher, you must learn to keep a tight rein on your emotions.

You must conquer your fear of the dark.

You must rid yourself of bad habits.

You must make up for the loss.

You must take things as they are.

You must study more.

You must study much harder.

Now that you're grown up, you must not behave like that.

Now that you are grown up, you must not behave like a child.

You must go to bed now.

You must get up a little earlier.

You must be less impatient.

You must put an end to your foolish behavior.

You must consider what kind of work you want to do.

You must give up smoking.

You must not rely upon such a man.

You must not depend so much on others.

You must practice it at regular intervals.

You must do it at once.

You must return the book to him.

You must state the fact as it is.

You must look after the child.

You must inform your superior of the results.

You must get rid of that bad habit.

You must promise not to take the rope off.

You must be above such mean conduct.

You must adapt to a variety of conditions.

You must put an end to this foolish behavior.

You must put these mistakes right.

You must read this book also.

You must get this homework finished by the day after tomorrow.

You must be mentally exhausted.

Since you have a cold, you must not go out.

Once you begin, you must continue.

You must be tired after such a long trip.

You must stick to your promise.