Involving, containing, comprising, enclosing, taking in, reckoning ... these are not exact synonyms, so which you choose will depend on the context of your sentence.
Creative writers use a variety of programs, including Word,Office,and Excel, which are well-formatted programs, instead of Microsoft wordpad or notepad.
Instead of using the word challenging you can use the word gifted, special, special gifted.
or
Will, when, why, it, can
I have a stomach ache.
Myself
mixture
are
Another word you can use instead of obituary is "death notice" or "memoriam."
used to be
is, it, in the past.
no "It" is not used instead of he and she...