4 sentences

1. 他把房间整理得干干净净。

   tā bǎ fáng​jiān zhěng​lǐ de gān​gān​jìng​jìng.

   He tidied the room until it was spotless.

   Source: Dong Chinese Dictionary

2. 他穿得干干净净，打扮得干净利落。

   tā chuān de gān​gān​jìng​jìng, dǎ​ban de gān​jìng​lì​luo.

   He was dressed cleanly and looked sharp and neat.

   Source: Dong Chinese Dictionary

3. 他把房子内外都打扫得干干净净。

   tā bǎ fáng​zi nèi​wài dōu dǎ​sǎo de gān​gān​jìng​jìng.

   He cleaned the house inside and out.

   Source: Dong Chinese Dictionary

4. 奶奶每天早晨都会把家门口那条小路扫得干干净净。

   nǎi​nai měi tiān zǎo​chén dōu huì bǎ jiā mén kǒu nà tiáo xiǎo​lù sǎo de gān​gān​jìng​jìng.

   Every morning, Grandma sweeps the path in front of the house spotlessly clean.

   Source: Dong Chinese Dictionary