____ printed, this science fiction will be popular among the students. 
#67782
A
Before
B
Unless
C
When
D
Once
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 In my opinion, you’d better eat and sleep more _________ lose any more weight.
#69844
A
so as to
B
in order not to
C
to not
D
so that not to
They have no idea at all ____.
#72409
A
what he is working on
B
what is he working on
C
what did he work on
D
what he is working