问题
选择题
_______ any reply, he had to send a second request. [ ]
A. Not to receive
B. Having not received
C. Not receiving
D. Not having received
答案
答案：D
搜题请搜索小程序“爱下问搜题”
_______ any reply, he had to send a second request. [ ]
A. Not to receive
B. Having not received
C. Not receiving
D. Not having received
答案：D