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
There’s no way of knowing why one man makes an important discovery ________ another man, also intelligent, fails.
#31181
A
since
B
if
C
as
D
while
To be successful, you need to remember that ___________you might be very busy, you need to be energetic and enthusiastic.
#30722
A
as though
B
in case
C
even if
D
now that
—Was it 11 o'clock ________ your father came back last night?—Yes, he is always coming back so late.
#30269
A
that
B
while
C
when
D
until
The retired workers were invited to the company, surprise,changes had been so great over the years.
#33651
A
whose
B
who
C
to whom
D
to whose
---Do you know what time you’ll be back this evening, Eric? ----I’m not sure. It depends on_______ the interview lasts.
#31710
A
when
B
what
C
how long
D
how much