Correct

一股劲儿

/ yī gǔ jìnr / 
Strokes

Example

As an Adverb

without a break; at one go; at a stretch

1
Tāmen
他们
yī
一
gǔ
股
jìnr  
劲儿
jiù
就
bǎ
把
rènwu
任务
wánchéng
完成
le
了
  
。

They finished the job at one go.