Recently, I've been troubled by an increase in nuisance calls.

Don't you think his behavior has been strange lately?

Nowadays, he goes to the gym every day.

The population is increasing rapidly.

He seemed to be in trouble.

He is having trouble solving math problems.

Your loud voice is really annoying.

His behavior is causing a nuisance to everyone.

I was greatly troubled by his actions.

My telephone is ringing.