Questões Militares de Inglês - Infinitivo e gerúndio | Infinitive and gerund

M a r k the alternative that indicates the two sentences in which the infinitive was used correctly.

I - I can't stop to talk to you right now. I'm very busy.

II - Please, remember to turn off the lights when you leave.

II - He doesrdt mind to stay home alone on Saturday nights.

IV - You must to watch this new TV series starring Will Smith.