问题
选择题
35.The highest award was given to Anna, who_________so hard on the project for years, and at last her efforts paid off.
A.has worked
B.worked
C.was working
D.had been working
答案
答案:D
35.The highest award was given to Anna, who_________so hard on the project for years, and at last her efforts paid off.
A.has worked
B.worked
C.was working
D.had been working
答案:D