Have you bought the same book ________ I referred to yesterday?
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A
that
B
as
C
which
D
what
推荐题目
University graduates should develop such skills as critical thinking, and inter-personal communication, ________ are important in personal development.
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A
which are believed by the manager that
B
which are believed by the manager
C
which the manager believes that
D
which the manager believes
His parents wouldn’t let him marry anyone ______ family was poor. 
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A
of whom    
B
whom
C
of whose 
D
whose