Yes they are correct I think.
Is there a paragraph that went with this question?
Every gerund has the same form - verb + -ing. So, having that in mind, the word <em>sleeping </em>is used as a gerund in this sentence, but it is also a subject of the sentence.
<span>A.
great
The sentence above displays a passive voice, wherein the sentence connotes the form, "</span><span>Despite great hardships, the explorers remained true to their goal.</span>"
Predicate Adjective
<span>Predicate adjective are adjectives in the predicate position. Like, she is pretty. Pretty is the predicate adjective.<span>
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