If the new arrangement doesn’t we’ll go back to the old one. A. work over B. work outC.

问题补充：

If the new arrangement doesn’t , we’ll go back to the old one.

A. work over

B. work out

C. work up

D. work down

答案：

A. work over

(答案→)B. work out

C. work up

D. work down

解析：work out 在此表示“使人满意”或“有好结果”。