The American economy is still in trouble，________ the Chinese economy is beginning to pick up.
#32644
A
when
B
however
C
while
D
therefore
推荐题目
Many experts hold the view ____teacher development is _____the key to better education lies.
#32063
A
which, where
B
which, in which
C
that, where
D
that, in which
—Did you return Fred’s call?—I didn’t need to ____ I’ll see him tomorrow.
#79777
A
though
B
unless
C
when
D
because
It is not always easy for the public to see _______ use a new invention can be of to human life.
#31304
A
whose
B
which
C
that
D
what
Tom is good a student he is often praised by the teacher.
#30357
A
such; as
B
so; as
C
such; that
D
so; that
The number of private cars in urban areas should be limited ___________the number of public buses should be increased.
#31434
A
when
B
while
C
unless
D
until