The time is approaching_______we will have to leave the lonely island.
#72285
A
if
B
whether
C
that
D
when
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        result it is, you’d better check it in practice yourself.
#67820
A
Whatever obvious a
B
However obvious
C
However obvious a
D
However a obvious
_____ is known to us all is that America is a developed country _____ the First World.
#72465
A
Which; belonging to
B
as; belonging to 
C
what; belonging to
D
It; belonging to