the plan has been made, let’s get down to it out.
A. Now that...carry
B. Because...carry
C. Since...carrying
D. Now...putting
网友回答
A. Now that...carry
B. Because...carry
(答案→)C. Since...carrying
D. Now...putting
解析：get down to doing sth. to为介词，开始认真做某事，前空“既然”的意思。