Answer:
must've
Explanation:
Must've is a contraction of must-have, which is the only acceptable answer. "Must of" is always incorrect, and "must" doesn't include the preposition.
Answer:
C) One passage provides objective economic data about the river while the others tell the story of two boys adventuring on its waters.
Explanation:
I believe the answer is C because the first passage provides factual information about the Mississippi River while the other simply uses the river as the story's setting.
