You say is when describing a single object or person. Are is used for describing multiple objects or people. Ex: The apple is on the table.
Ex: The apples are on the table.
Instead of using the word challenging you can use the word gifted, special, special gifted.
Will, when, why, it, can
or
Myself
I have a stomach ache.
mixture
are
Another word you can use instead of obituary is "death notice" or "memoriam."
used to be
Answer.
is, it, in the past.
no "It" is not used instead of he and she...