Correct

留尾巴

/ liúwěiba /
Strokes

Definition

to leave loose ends/to leave matters unresolved

Example

As a Verb

leave sth unfinished

1
zuòshì
做事
zǒng
ài
liú
wěiba
尾巴
  

It is his habit to leave things unfinished.

2
Gǎn
zài
tiānhēi
天黑
qián
huó
gàn
wán
  
,
biè
zài
liú
wěiba
尾巴
le
  

Try to finish the work before it gets dark. Don't leave any of it unfinished.