---I’m sorry Linda. I’m late.Oh Kate. You have kept me for you for half an hour.A.

问题补充：

---I’m sorry, Linda. I’m late.

--- Oh, Kate. You have kept me for you for half an hour.

A. wait

B. waiting

C. to wait

D. waits

答案：

A. wait

(答案→)B. waiting

C. to wait

D. waits

解析：句意：对不起，琳达，我迟到了。哦，凯瑞，你让我在这里等了你半个小时。keep sb doing sth使某人保持着一直做某事