她决定将周末时间投入到志愿服务中。

She decided to ___devote her weekends ___to volunteering.

许多专业人士将大量精力投入到事业中。

Many professionals ___devote significant energy ___to their careers.

投入足够时间备考很重要。

It's important to ___devote enough time ___to studying for exams.