国家开放大学 / 综合英语(3)
正确率:100%
As she _ _ _ _ _ _ _ so many times before, she spoke calmly of how the mountains needed to be preserved.
A.was doing
B. does
C.have done
D. had done
A.was doing
B. does
C.have done
D. had done
参考答案:
佳题速递: