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

答案：

A. work over

(答案→)B. work out

C. work up

D. work in

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