Hey there!
<h2>Yesterday we <em>saw</em> a <em>great</em> <em>blue</em> heron <em>alone</em> by the river. Which word in the sentence does the underlined word?</h2>
Well, "
" would most likely
the
word "
". It has the purpose for the
which has specified for the word 
To sum it all up, it's 
Good luck on your assignment and enjoy your day!
~
<h2 />
The line between dreams and reality is thin.
What’s the literary work?
This sentence is missing a comma after the word "big" (it should read: the big, domed building) since big and domed are two different adjectives describing the building in question.