(10)非谓语动词

　　81.When____, the museum will be open to the public next year. [仿2004NMET(IV)--25]

　　A.completing 　　B.completed 　　C.being completed 　　D.to be completed

　　82._____ the ladder, get someone to hold it. [仿2004湖北卷--28]

　　A.When climbed 　　　　　　　　　B.When to climb

　　C.When climbing 　　　　　　　D.When one climbs

　　83.Don't leave your work half _____. [仿2004天津卷--24]

　　A.being done 　　B.doing 　　　　C.to do 　　　　D.done

　　84.Any student,who is thougnt ______ the rules, for example, by cheating, has _____ before a student court. [仿2004湖北卷--33]

　　A.to have broken; to appear 　　　B.to break; to get

　　C.broken; taken 　　　　　　　　　D.to break; to be taken

　　85.Prices of daily goods _____ through a computer can be lower than store prices. [仿2004上海卷-35]

　　A.buying 　　　　B.bought 　　　　C.are bought 　　　　D.been bought

　　86.______ in the chimey for five hours, the thief looked very pale and tired. [仿2004江苏卷--31]

　　A.Having been trapped 　B.Being trapped 　C.trapping　　D.Having trapped

　　87.The crowd is too noisy, but anyway I have to make myself ______ to them because the news is so important to them. [仿2004NMET(III)--22]

　　A.known 　　　　B.understood 　　C.heard 　　　　D.known