. I have taught hundreds of students,___________ having been working in their fields for years.
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A
some of whom
B
some of them
C
most of whom
D
who
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He is _______ here as he was at home. 
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A
almost as happy
B
as happy almost
C
as almost happy
D
almost happy as
_______in the ocean, it becomes powerless once it is on the beach. 
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A
However a whale is powerful
B
However powerful a whale is
C
Whatever a powerful whale is
D
Whatever powerful a whale is