Open the brackets, put the verbs in the Present Perfect or Past Simple Tense, Use full forms. I (have, not) this much fun since my childhood.
Open the brackets. Use full forms.
This year I (to be, not) to South America yet, but in January I (to go) to Australia.
I haven't had this much fun since my childhood.
This year I haven't been to South America yet, but in January I went to Australia.