2 sentences for 端正 (duān​zhèng — proper)

1. 我们要端正学习态度。

   wǒ​men yào duān​zhèng xué​xí tài​du.

   We must correct our attitude toward learning.

   Source: Dong Chinese Dictionary

2. 他品行端正，深受老师和同学们的喜爱。

   tā pǐn​xíng duān​zhèng, shēn shòu lǎo​shī hé tóng​xué men de xǐ'ài.

   He has upright conduct and is deeply loved by his teachers and classmates.

   Source: Dong Chinese Dictionary