The responses you provided do not explicitly indicate a past time, as all the phrases are written in the infinitive form in French. To identify a past time, you would typically look for conjugated verbs in the past tense (like "grimpé" for climbed, "fait" for did/made, "nagé" for swam, "monté" for rode).
If you are looking for activities that could have been done in the past, they all suggest actions that can have occurred in the past, but the phrases themselves do not confirm a specific past time.
If you need any further clarification or assistance, feel free to ask!