非谓语动词
81．When____, the museum will be open to the public next year. [
A.completing B.completed C.being completed D.to be completed
82．_____ the ladder, get someone to hold it.
A.When climbed B.When to climb
C.When climbing D.When one climbs
83.Don't leave your work half _____.
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.
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.
A.buying B.bought C.are bought D.been bought
86.______ in the chimey for five hours, the thief looked very pale and tired.
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.
A.known B.understood C.heard D.known
答案：81-85:BCDAB 86-87:AD