I'll do it, if you insist. ✬

I insist on your being present. ✬

You must not insist on going out alone so late at night. ✬

Why do you insist on paying for your school expenses yourself, when your parents are willing to give you financial support? ✬

I insist that exceptions not be made. ✬

Insist on the best. ✬

Some insist that the Spanish hostel is a pornographic film. ✬

Come in. I insist. ✬

I insist that you leave Tom alone. ✬

I must insist. ✬