_____ 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
--- May I go and play with Dick this afternoon, Mum?--- No, you can’t go out _____ your work is being done.
#31631
A
before
B
until
C
as
D
the moment
I took my driving license with me on holiday, _______ I wanted to hire a car.
#30088
A
incase
B
even if
C
ever since
D
so that
_______ the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.
#30087
A
If
B
While
C
Because
D
As
—May I go out tonight?—Of course you can, _____ you promise to be back before 10 o’clock.
#31198
A
as soon as
B
as well
C
as long as
D
as usual
— Are you ready for Spain?— Yes. 1 want the girls to experience that______they are young.
#79819
A
while
B
until
C
if
D
before