问题
选择题
_____ a reply from Mabel, Jack sent another e-mail to her. [ ]
A. Not receiving
B. Having not received
C. Not received
D. Not having received
答案
答案：D
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_____ a reply from Mabel, Jack sent another e-mail to her. [ ]
A. Not receiving
B. Having not received
C. Not received
D. Not having received
答案：D