问题
单项选择题
We regret to inform you that we did not receive your L/C for the above Sales Confirmation ______ today.
A．up to
B．by
C．till
D．before
答案
参考答案：C
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We regret to inform you that we did not receive your L/C for the above Sales Confirmation ______ today.
A．up to
B．by
C．till
D．before
参考答案：C