—I was asked to attend the meeting before eight.—Oh you. Im sorry for not telling you th

问题补充：

—I was asked to attend the meeting before eight.

—Oh, you. Im sorry for not telling you that we have changed the plan.

A. must

B. can

C. may

D. needn

答案：

A. must

B. can

C. may

(答案→)D. needn

解析：句意：我被告知八点前参加会议。——哦，不必了。很抱歉没有告诉你我们改变了计划。本题考查情态动词的用法。Must意思是“必须”； can 意思是“不会，不能”； may 意思是“可以，允许”； needn 意思是“不必要”。结合句意，故选A.