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What a pity! I ______ in Hainan two more days, but something urgent needed to be dealt with back home.

A.    must have stayed                                B.    needn’t have stayed

C.    may have stayed                                 D.    could have stayed

What a pity! I ______ in Hainan two more days, but something urgent needed to be dealt with back home.

A.    must have stayed                                B.    needn’t have stayed

C.    may have stayed                                 D.    could have stayed

What a pity! I _______ in Hainan two more days, but something urgent needed to be dealt with back home.

A. must have stayed                                      B. needn’t have stayed   

C. could have stayed                       D. may have stayed

What a pity! I      in Hainan two more days, but something urgent needed to be dealt with back home.

A．must have stayed                                        B．needn’t have stayed

C．may have stayed                                         D．could have stayed

 What a pity! I _______ in Hainan two more days, but something urgent needed to be dealt with back home.

A. must have stayed                                     B. needn’t have stayed   

C. may have stayed                                     D. could have stayed