We apologize for any inconvenience you _______ have been caused by the delay of the flight.
A．mayB．wouldC．mustD．need
A
考查情態(tài)動詞，A. may+have done過去可能做了，表示不確定的推測，B. would+have done過去本來會做而沒做，，C. must+have done過去一定，D. need+have done過去本有必要做卻沒做，句意是;我們?yōu)榇蠹铱赡芤驗楹桨嗟难诱`導致的不便而道歉。選A。
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