Shall Mary come to the concert with us？－Not she has finished her paper．
#80489
A
since
B
once
C
when
D
unless
推荐题目
I was just about to go to bed last night ______ the telephone rang.
#31260
A
while
B
when
C
as
D
before
______ I admit that all these problems are difficult, I don’t agree that they can’t be solved.
#32853
A
Unless
B
While
C
Until
D
Since
____ I say Clancy is a smart boy, he still needs to work hard to achieve his goal．
#32619
A
Then
B
When
C
While
D
As
The school rules state that no child shall be allowed out of the school during the day, __________ accompanied by an adult.
#32564
A
once
B
when
C
if
D
unless
The Frenchman speaks ______.
#80381
A
French as well as Chinese
B
Chinese as well as French language
C
Chinese as well as French
D
the French language as well as Chinese.