"English Sentence Checking" not present.

Hello,

I am trying to get Writer set up to where it will highlight repeated words. In the following thread, it is suggest that one tick a box in “English Sentence Checking” under Language Settings.

Unfortunately, the “English Sentence Checking” option does not appear for me (Version 4.2.0.4 on Ubuntu 13.10). I only have “Languages” and “Writing Aids” under Language Settings. If anyone has any thoughts as to why this option is not available, I would love to hear them. Thanks!