I want some potatoes. Do you have any?

Jim is crazy about his girlfriend.

Jim made a superfluous remark.

How long have you known Jim Robinson?

I couldn't scrub the stain out.

He impatiently asked for repayment.

Would you mind my staying here for some time ?

It is difficult to overcome this shortcoming without drastically changing the whole system.

Changing the system is difficult, not to mention the interpersonal relationships.

A frown may express anger or displeasure.