I think his behavior is completely lacking in common sense.

His behavior was considered thoughtless.

When you multiply the multiplicand and the multiplier, you get the product.

He injured his shoulder and arm.

Please use the emergency stairs in case of a fire.

She wears a hijab every day.

She is interested in numerology.

He likes to take a walk in the park at dusk.

He is learning Ancient Greek language.

Please press this button in case of emergency.