Question

【题目】— Alvin, are you coming with us?

— I'd love to, but something unexpected ________.

A．has come up

B．was coming up

C．had come up

D．would come up

Answer 1

【答案】A

【解析】说话的时候那件事已经发生了。B是正在发生，C是表示过去的过去，这段对话基于点是现在，所以C不对。