81.Corn originated in the New World and thus was not known in Europe until Columbus found it______ in Cuba. (00.1/45)
　　A. having cultivated B. being cultivated C. been cultivated D. cultivating

　　82.The sale usually takes place outside the house, with the audience_______ on beaches, chairs or boxes. (00.1/46)
　　A. having seated B. seating C. having been seated D. seated

　　83.______ in this way, the situation doesn’t seem so disappointing. (00.1/68)
　　A. To look at B. To be looked at C. Looking at D. Looked at

　　84.These surveys indicate that many crimes go______ by the police, mainly because not all victims report them. (00.6/26)
　　A. to be unrecorded B. to have been unrecorded C. unrecorded D. unrecording

　　85.I have no objection_______ your story again. (00.6/27)
　　A. to hearing B. to have heard C. to hear D. to having heard

　　86.You will see this product_______ wherever you go. (00.6/30)
　　A. advertised B. advertising C. advertise D. to be advertised

　　87.Peter, who had been driving all day, suggested_______ at the next town. (00.6/34)
　　A. stop B. to stop C. stopping D. having stopped

　　88.The professor could hardly find sufficient grounds_______ his arguments in favor of the new theory. (00.6/36)
　　A. on which to base B. which to base on C. to base on D. to be based on

　　89.I’ll never forget______ you for the first time. (01.1/43)
　　A. to meet B. to have met C. meeting D. having to be meeting

　　90.That young man still denies_______ the fire behind the store. (01.1/45)
　　A. to start B. having started C. start D. to have started

　　答案：BDDCA    ACACB