YOU SAID:

Sentences aren't fun to work with at all

INTO JAPANESE

文章を扱うことはまったく楽しいことではありません

BACK INTO ENGLISH

Handling sentences is not at all fun

INTO JAPANESE

文章を扱うことは全く楽しいことではありません

BACK INTO ENGLISH

Handling sentences is not a pleasant thing at all

INTO JAPANESE

文を扱うことはまったく楽しいことではありません

BACK INTO ENGLISH

Handling sentences is not a pleasant thing at all