2 sentences

1. 纸上写满了密密麻麻的字。

   zhǐ shàng xiě​mǎn le mì​mi​má​má de zì.

   The paper was covered with dense handwriting.

   Source: Dong Chinese Dictionary

2. 他总是把旧作业本的反面也写满，生活非常节省。

   tā zǒng​shì bǎ jiù zuò​yè​běn de fǎn​miàn yě xiě​mǎn, shēng​huó fēi​cháng jié​shěng.

   He always fills the back of his old notebooks with writing; he leads a very frugal life.

   Source: Dong Chinese Dictionary