Jackhadplannedtovisithisgrandparentslastweekend,butanem...

问题详情：

Jack had planned to visit his grandparents last weekend, but an emergency _____ and he had to reschedule.

A．should come up      B．had come up           C．came up                 D．would come up

【回答】

C

【详解】

考查时态。句意：杰克原计划上周末去看望他的祖父母，但突然发生了一件紧急事情，他不得不重新安排时间。由“he had to reschedule”可知，and连接的两个句子都为一般过去时。故选C项。

知识点：一般过去时及其被动式

题型：选择题