insist ·phrasal verb

她坚持自己做饭。

She ___insists ___on cooking all her own meals.

弗兰克坚持自己做所有的工作。

Frank ___insisted ___on doing all the work himself.

年轻人经常坚持自己做所有事情。

Young people often ___insist ___on doing everything on their own.