Inglês — Aspectos gramaticais

Look at the strip story below and answer the question that follows it.In the sentence It´s hard to get mad at someone who returns things so promptly the relative pronoun who is being used to define the subject of a relative clause. Look at the sentences below and select the ones in which the underlined relative pronoun is used correctly. I. The girl in pink is the one that I told you about.II. Peter went to the restaurant which I eat.III. The woman whose we met at the mall is a teacher.IV. Do you know the Japanese guy with whom I travelled?