（ ）, it was finished in time.
A.As the work was difficult
B.Difficult though the work was
C.Difficult as was the work
D.Difficult as the work was
正确答案是D
（ ）, it was finished in time.
A.As the work was difficult
B.Difficult though the work was
C.Difficult as was the work
D.Difficult as the work was
正确答案是D