Never make these mistakes in Chinese 78

Foreigners often make some strange mistakes in Chinese when they study the most difficult language--- ---Chinese. We try to analyze typical sentences to correct these errors.

          Tā de fánɡjiān shōushi dé ɡānɡān jìnɡjìnɡ jíle.
False: 他的房间收拾得干干净净极了。
          Tā de fánɡjiān shōushi dé ɡānɡān jìnɡjìnɡ.
True: 他的房间收拾得干干净净。