We have sometimes accidents on this line, but no accident______since last winter.(本题1.0分)
A、 has been occured
B、 has occurred
C、 has been occurring
D、 is occurring

答案是:

标准答案:B
出自  青书学堂  >  河北工业大学-会计学-英语3(专升本)

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本题添加时间:2023/4/3 12:59:00