高等继续教育 / 大学英语I
正确率：100%
题型描述: 单选题
_ _ _ _ _ Tom _ _ _ _ Mary can help me, for they are very busy.
A. Either; or
B. Both; and
C. Neither; nor
D. Whether; or
_ _ _ _ _ Tom _ _ _ _ Mary can help me, for they are very busy.
A. Either; or
B. Both; and
C. Neither; nor
D. Whether; or
参考答案：
佳题速递：