15. By the time you finish your homework, all of us _____ ours at hand, I’m sure.(本题2.0分)
A、 will finish
B、 will have finished
C、 have finished
D、 have been finishing

答案是:

标准答案:B
出自  青书学堂  >  长春工程学院-大学英语4(专升本)

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本题添加时间:2023/4/3 12:59:00