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
The only way to succeed at the highest level is to have total belief_____ you are better than anyone else on the sports field.
#31179
A
how
B
that
C
which
D
whether
______ the students found the soldier’s idea interesting, the system was too difficult to be of practical use.
#32332
A
While
B
Unless
C
As soon as
D
Even if
So although Fleming discovered penicillin, it was over a decade ___________someone else turned penicillin into the great drug of the 20th century.
#34272
A
when
B
that
C
before
D
unless
Please don’t try to back out _____ everything has been arranged.
#31400
A
until
B
though
C
when
D
unless