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

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

. 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

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