问题补充:
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
答案:
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