HSK V7-9
Correct

一体

/ yītǐ / 
Strokes

Definition

an integral whole/all concerned/everybody

Example

As a Noun

an organic/integral whole

1
Liǎng
两
zhǒng
种
yánsè
颜色
húnchéng
混成
yītǐ
一体
  
。

The two colours mixed and united.

2
Sānwèiyītǐ
三位一体

three in one

3
Róngwéiyītǐ
融为一体

merge into an organic whole

As a Noun

all people concerned; everyone

4
Wàng
望
yītǐ
一体
zūnzhào
遵照
zhíxíng
执行
  
。

It is hoped that everyone will abide by this.