What the doctors really doubt is _____________ my mother will recover from the serious disease soon.
#73938
A
when
B
how
C
whether
D
why
推荐题目
Even if there is no scientific proof secondhand smoke causes cancer, there is no reason why nonsmokers should be forced to take this risk.
#67696
A
which
B
that
C
when
D
where
I can think of many cases ______ students can’t write a good article though having a large vocabulary.
#69673
A
where
B
which
C
that
D
to which
The clock was striking twelve ______ down the street.
#74557
A
because I walked
B
as I walked
C
since I was walking
D
while I was walking
—Was his father very strict with him when he was at school？—Yes, he had never praised him _______ he became one of the top students in his grade.
#74587
A
after
B
unless
C
until
D
when