Correct

就手

/ jiù shǒu / 
Strokes

Example

As an Adverb

while you're at it

1
Nǐ
你
jiù
就
shǒu
手
bǎ
把
zhè
这
fēng
封
xìn
信
gěi
给
wǒ
我
jì
寄
le
了
bā
吧
  
。

Please mail this letter for me while you are at it.

2
Qǐng
请
jiùshǒu
就手
bǎ
把
mén
门
guānshàng
关上
  
。

Close the door behind you, please.