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They have been waiting for many hours to see the singer, but the airplane must have been _____.

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to wait  wait  have been waiting  am waiting  
waited  had been waiting  have waited  am waiting  
have been waiting    am waiting    had been waiting    waited  
have moved; is waiting; are to be built    have been moved; are waiting; will be completed    have been moved; is waiting; will have been putting up    have moved; are waiting; are to be set up  
waited    had been waiting    have waited    am waiting  
waited    had been waiting    have waited    am waiting  
had waited  have been waited  had been waiting  will have been waiting  
had been waiting    have been waiting    have waited    was waiting  
have been waiting, held up    had been waiting; had been held up    waited; were held up    were waiting; have been held up  
waited    had been waiting    have waited    am waiting  
had been waiting    had waited    have been waiting    have waited  
To have been kept waiting    Having been kept waiting    Kept to be waiting    Kept to have been waiting  
was waiting   have been waiting   had been waiting   would wait  
waited  had been waiting  was waiting  have been waiting  
waited   have waited   had been waiting   have been waiting  
have been waiting    were waiting    had been waiting    have waited  
had waited  have been waited  had been waiting  will have been waiting  
have moved; is waiting; are to be built    have been moved; are waiting; will be completed    have been moved; is waiting; will have been putting up    have moved; are waiting; are to be set up  
have moved; is waiting; are to be built   have been moved; are waiting; will be completed   have been moved; is waiting; will have been putting up   have moved; are waiting; are to be set up  
have been waiting; has appeared   have been waiting; is appeared    have waited; has appeared   have waited; appeared  

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