806 The president of the block association tried to convince her neighbors they should join forces to prevent crime in the neighborhood rather than continuing to be victimized.
(A) they should join forces to prevent crime in the neighborhood rather than continuing to be victimized
(B) that they should join forces to prevent crime in the neighborhood rather than continue to be victimized
(C) about joining forces to prevent crime in the neighborhood instead of continuing to be victimized
(D) for the joining of forces to prevent crime in the neighborhood rather than continue to be victimized（B）
(E) to join forces to prevent crime in the neighborhood rather than continuing to be victimized
请问B中的should为什么不省去？这里不是虚拟语气吗？
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