A curve is a line ______ no part is straight and which has no angle.
#30518
A
that
B
whose
C
in which
D
of which
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He was in great trouble, but he acted _______ nothing had happened.
#33313
A
even if
B
as if
C
unless
D
until
Advances in using genes as well as nanotechnology make it likely __humans will live in the future beyond ____has been possible in the past.
#34087
A
that ,which
B
what, that
C
that ,what
D
where , what
_____ I am concerned, Peru is well worth a visit.
#31281
A
Even if
B
In my opinion that
C
As is known that
D
As far as