the plan has been made let’s get down to it out.A. Now that...carryB. Because...carryC. S

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