I had trouble finding my keys this morning.

She looked troubled.

His behavior troubles us.

When you find yourself in trouble, don't hesitate to ask for help.

Dealing with difficult customers can be troubling.

I always get in trouble for being late to work.

I always seem to get into trouble.

If you keep provoking him, you're just asking for trouble.

I don't want to go to the trouble of cooking tonight.

If it's not too much trouble, could you please help me with this task?