Correct

同居

/ tóngjū / 
Strokes

Definition

to live together

Example

As a Verb

live together

1
Fùmǔ
父母
sǐ
死
hòu
后
  
,
tā
他
hé
和
nǎinai
奶奶
tóngjū
同居
  
。

He lived with his grandma after his parents died.

As a Verb

cohabit

2
Zhè
这
nǚhái
女孩
hé
和
yī
一
gè
个
wàiguó
外国
rén
人
rènshi
认识
méi
没
duōjiǔ
多久
jiù
就
gēn
跟
tā
他
tóngjū
同居
le
了
  
。

The girl cohabited with a foreign man not long after they got to know each other.

3
Tāmen
他们
tóngjū
同居
yī
一
nián
年
zhīhòu
之后
cái
才
jiéhūn
结婚
  
。

They lived together for one year before they got married.