他在业余时间兼职做平面设计师。

He works as a graphic designer ___on ___the ___side.

她尝试找一些自由职业的兼职。

She tried to find freelance work ___on ___the ___side.

为了养家，这位老师在业余时间做家教。

To support his family, the teacher gives private tuition ___on ___the ___side.