8. The doctors did what they could _______ her. ( )(本题2.0分)
A、 helping
B、 help
C、 helped
D、 to help

答案是:

标准答案:D
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