Correct

习作

/ xí zuō / 
Strokes

Definition

study

Example

As a Verb

do exercises in composition

1
Kèkǔ
刻苦
xízuō
习作

apply oneself to exercises; work hard to improve through practice

As a Noun

exercise in composition, drawing, etc

2
Zhèxiē
这些
shì
是
huàjiā
画家
zǎonián
早年
de
的
xízuō
习作
  
。

They are the painter's early exercises.

3
Shuǐcǎihuà
水彩画
xízuō
习作

exercise in water colours