there would be no point arguing any longer.A. Was that trueB. If that was trueC. Should

问题补充：

, there would be no point arguing any longer.

A. Was that true

B. If that was true

C. Should that be true

D. Could that be true

答案：

A. Was that true

B. If that was true

(答案→)C. Should that be true

D. Could that be true

解析：考查虚拟语气。句意：如果这是真的，继续争吵这个是很傻的。首先排除A B A里面的was应该用were，从句意上看排除D。Should that be true =If that should be true, 去掉if 句子倒装。正确答案是C。