A curve is a line_________no part is straight and which has no angle.
#66845
A
that
B
whose
C
of which
D
which
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People often have this belief ______ development is bad for the environment, but this does not have to be true.
#68261
A
that
B
which
C
where
D
how
This is the book I bought yesterday , ______I spent 8 yuan .
#74142
A
on which
B
for which
C
in which
D
at which