What is up?Jim should be here by now.what-----him?A was kept B is keeping C had kept D will keep

题目

What is up?Jim should be here by now.what-----him?A was kept B is keeping C had kept D will keep

答案

选择B 原文的意思是：问：怎么了?答：Jim现在应该已经在这里的（实际上还没有来）,是什么耽搁了呢?
因为现在Jim仍被某事困住,所以用现在进行时