The answer to your questions will be summed up into one paragraph.
This is:
<span>The great poets commonly take up the subject of death in their works, but it is rare to see a great poet treat death in such a sustained and deeply personal way as Tennyson does. Many of his greatest works were written in the aftermath of the death of his closest friend, Arthur Henry Hallam. </span>
Because her past was full of sorrow and pain.
Practice is how a musician gets to Carnegie Hall
The answer will be C: Predicate Nominative
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