在无色透明溶液中，能够大量共存的离子组是（　　）

A．I^-、ClO^-、K⁺、H⁺

B．Na⁺、Cu²⁺、Cl^-、SO₄^2-

C．H⁺、Ca²⁺、Cl^-、CO₃^2-

D．Na⁺Cl^-NO₃^-CO₃^2-

For a moment nothing happened, and then ______ all shouting together.

A．voices had come

B．came voices

C．voices would come

D．did voices come