Nobody believed his reason for being absent form the class _____he had to meet his uncle at the airport.  
#73873
A
why
B
that  
C
where
D
Because
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Those were the graduate assistants ______ to do the research work in the lab.
#73726
A
to whom it was their responsibility
B
whose responsibility there was
C
whose responsibility was
D
of whom with the responsibility
 Copy the expression___, please, without any change.
#66602
A
as it is
B
such as it is
C
what it is
D
so it is