学生可以从额外的数学辅导中受益。

Students can benefit from extra ___coaching in math.

许多年轻的足球队苦于缺乏合格的指导。

Many young football teams suffer from a lack of qualified ___coaching.

经过仅仅几周的私人辅导，她的小提琴演奏水平有了显著提高。

Her violin playing improved dramatically after just a few weeks of private ___coaching.