. What the doctors really doubt is ______ my mother will recover from the serious disease soon.
#34555
A
when
B
how
C
whether
D
why
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Our country did a lot about the drunk-driving, and it took some time ____ the situation got better.
#33201
A
after
B
since
C
unless
D
before
(2010·重庆)Today,we will begin ________ we stopped yesterday so that no point will be left out.
#30435
A
when
B
where
C
how
D
what