that, which, whom; take, to take, takingThose boys______ parents

that, which, whom; take, to take, taking
Those boys______ parents encourage______ part-time jobs will possess more confidence.
【正确答案】：whom/to take
【题目解析】：Encourage sb to do sth鼓励某人去做某事（还没做）; encourage doing鼓励某人正在做的事（已经在做了）。