You should explain why there is a gap in your work history.
Answer 1I stayed at home with my children. I had to look after them. Now they can take care of themselves, and I can work again.
Answer 2I did some volunteer work ... (please specify).
Answer 3I decided to have a break and to attend a course in... (please specify).
Answer 4List all activities that you did during the period of unemployment. Explain why this time was useful to you and your family.
In any case, you should let the interviewer know that you spent the time off productively - performing meaningful activities.