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

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 in

答案：

A. work over

(答案→)B. work out

C. work up

D. work in

解析：work out 在此表示“有预期结果”；work over 意为“调查，重做”；work up 意为“逐步建立，逐步发展”；work in 意为“配合，引进”。