问题
单项选择题
contracts must be renewed one week （） their expiration.
A．on
B．against
C．the moment of
D．before
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
contracts must be renewed one week （） their expiration.
A．on
B．against
C．the moment of
D．before
参考答案：D