Complete the text with had to, didn’t have to, could or couldn’t.
Jack 1 _______________ play the guitar until he was fourteen years old. This was because he didn’t have time. He 2 _______________ help his father in the family shop every day. He 3 _______________ work on Saturdays, but there was still no time for music. When he was fourteen, his father sold the shop and his son 4 _______________ have the guitar lessons he’d always dreamed of.