Question: What were your favourite activities when you were a child?
Analysis

You should talk about the activities you enjoyed most as a child, such as playing games, drawing, or riding a bike. You can also mention why you liked those activities, for example, because they were fun or you did them with friends or family.

Synonyms
Try these synonyms instead of repeating the question:
  1. activities→pastimes; hobbies; things to do
  2. when you were a child→in your childhood; as a kid; when you were little