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
Myself
I have a stomach ache.
mixture
are
used to be
is, it, in the past.
no "It" is not used instead of he and she...
Answer.