—May I speak to your manager Mr. Williams at five o’clock tonight?—I’m sorry. He gone to

问题补充：

—May I speak to your manager Mr. Williams at five o’clock tonight?

—I’m sorry. He gone to a party long before then.

A. had

B. is

C. will have

D. has

答案：

A. had

B. is

(答案→)C. will have

D. has

解析：考查时态;时间状语是by接将来时间，用将来完成时，by+过去时，用过去完成时，这句话的时间是by then，就是到今晚的5点，所以用将来完成时，句意——-今晚5点我可以和你的经理威廉说话吗？--很抱歉，到那时，他将已经去聚会很久了。选C。