we have got everything ready, let’s begin the debate.
A. Before long
B. Rather than
C. Now that
DEven if
网友回答
A. Before long
B. Rather than
(答案→)C. Now that
D. Even if
解析：A. Before long不久以后，B. Rather than而不是，C. Now that 既然，D. Even if即使，句意：既然我们一切都准备好了，我们开始辩论吧。选C。