3 sentences

1. 你为什么同意为我作画？

   nǐ wèi​shén​me tóng​yì wèi wǒ zuò​huà?

   Why did you agree to paint my portrait?

   Source: OpenSubtitles

2. 他们轮流作画。

   tā​men lún​liú zuò​huà.

   They take turns painting.

   Source: OpenSubtitles

3. 这位艺术家正在工作室里精心作画。

   zhè wèi yì​shù​jiā zhèng​zài gōng​zuò​shì lǐ jīng​xīn zuò​huà.

   The artist is carefully painting in the studio.

   Source: Dong Chinese Dictionary