The present perfect and the simple past (I.4)

Put the verbs in brackets into the correct tense: present perfect or simple past.

Ann: Hello, Jack! I (not see) you for ages! Where (you be)?
Jack: I (be) in Switzerland. I (mean) to send you a postcard but I (not have) your address with me.
Ann: Never mind. (You have) a good time in Switzerland? How long (you be) there? Jack: I (be) there for a month. I (only just get) back. Yes, I (enjoy) it thoroughly. I (ski) all day and (dance) all night.