15．What does the sign over there read ?　 No person ____smoke or carry a lighted cigarette,cigar or pipe in this area．

　　　　 A．will　　　　 　　　 B．may　　　　 　　　　 C．shall　　　 　　　　　 D．must

14．It was really very kind of you to give me a lift home．Oh, don’t mention it．I____past your house anyway．

　　　　 A．was coming　 　　 B．will come　 　　　　　 C．had come　 　　　　 D．have come

13．The news of the mayor’s coming to our school for a visit was ____on the radio yesterday．

　　　　 A．turned out　　 　　 B．found out　 　　　　　 C．given out　 　　　　　 D．carried out

12．We’ll have to finish the task ,______

　　　　 A．it takes however long　　 　　　　　　　　　　　　 B．however long it takes

　　　　 C．long however it takes　　 　　　　　　　　　　　　 D．long it takes however