A completely new situation is likely to when the new law comes into effect.A. ariseB. rise

问题补充：

A completely new situation is likely to when the new law comes into effect.

A. arise

B. rise

C. raise

D. rose

答案：

(答案→)A. arise

B. rise

C. raise

D. rose

解析： A出现；B上升；C提高，举起（及物动词，要加宾语）；D. rise的过去式。句意：当新法律生效的时候，全新的情况可能会出现。根据句意说明A正确。