_____ a certain doubt among the workers as to whether he could finish the task in a short time．
#34562
A
It was
B
There had
C
There existed
D
It had
推荐题目
Viewers continue to watch TV ______ they complain about the quality of the programming.
#33448
A
even though
B
as if
C
as long as
D
unless
________ private cars are bringing us convenience, they may also cause more traffic accidents and pollution.
#32291
A
While
B
As
C
If
D
Since
It will be quite a long time______she is back again, so don’t be too cross with her.
#80230
A
that
B
since
C
before
D
until
She was so angry that she rushed out into the rain ______ I could stop her.
#31745
A
when
B
until
C
before
D
after
We had to be patient because it ______ some time ______ we got the full results.
#30195
A
was; since
B
had been; since
C
was; before
D
would be; before