Studying in groups is necessary_____ you want to do well in school.
#30854
A
if
B
until
C
unless
D
though
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______this difficulty is overcome, other problems will be easy to solve.
#33583
A
For
B
Whether
C
Once
D
Though
The problem of the present world is that those who are imaginative have little experience_________those who are experienced have weak imagination.
#31024
A
unless
B
although
C
because
D
while
(2014·辽宁五校第一联合体考试)What impresses me most is________he appears in front of others，he wears a sincere and charming smile.
#30034
A
what
B
which
C
that where
D
that whenever
—Are you ready for Spain?—Yes.I want the girls to experience that________ they are young.
#30059
A
while
B
until
C
if
D
before