老师反复练习这些单词来训练学生的发音。

The teacher ___drilled the students on pronunciation by repeating the words.

牙医在牙齿上钻了个洞来填补龋齿。

The dentist ___drilled a small hole in the tooth to fill the cavity.

老师通过反复练习来训练学生的数学技能。

The teacher ___drilled the students in math skills through repeated practice.

警察用连续射击引爆了空中的危险物体。

The police ___detonated the dangerous object in the air with rapid fire.