His ability has never been in doubt----the question is ___________ or not he is prepared to work hard.
#31580
A
that
B
if
C
where
D
whether
推荐题目
Children in that kindergarten are sometimes asked to sit on their hands ______listening to the teacher.
#31671
A
while
B
though
C
after
D
during
Considering the time limits, we also provide CDs ________ our students may prefer to study at home.
#30813
A
so that
B
so long as
C
in case
D
as if
Have you seen the film “Titanic”, ________ leading actor is world famous.
#33220
A
is
B
it’s
C
whose
D
which
__________ printed, this science fiction will be popular among the students.
#32558
A
Before
B
Unless
C
Although
D
Once