The alarm clock didnt ring this morning. You______it last night.
A．need to have forgotten to wind
B．may have forgotten winding
C．ought to have forgotten to wind
D．must have forgotten to wind

未分类题As always, the downtown area was the busiest with people______in theatres, restaurants and department stores.A．crowdedB．crowdC．being crowdedD．crowding

未分类题______his number for an hour only to hear a busy signal, she became impatient and called the operator for assistance.A．DialingB．DialedC．Having dialedD．To dial

未分类题Not only______tolerant of other peoples opinion, but he is also patient.A．he isB．is heC．he will beD．will he be

未分类题There must have been someone who had informed the owner of the bathing center of the sudden crack-down or he______able to escape the sweep.A．wouldn't beB．wouldn't have beenC．might have beenD．needn't have been

未分类题The national parks are very important for preserving many animals, who would ______run the risk of becoming distinct.A．insteadB．neverthelessC．thereforeD．otherwise

未分类题Some people may have been daunted by the task because of the difficulties it brings, but I do not know of______.A．them doing soB．any having done soC．their doing like thatD．any doing that way

未分类题______as it was at such a time, his medical work attracted much attention.A．Being publishedB．PublishedC．PublishingD．To be published

未分类题After what he has done for you, I think you should have given him some support, ______you disagree with him.A．no matter whatB．however muchC．whateverD．wherever

未分类题______ that the trade between Mexico and the Philippines reached its highest point.A．During the 1960'sB．It was in the 1960'sC．That it was in the 1960'sD．It was the 1960's

未分类题It was the life in him, unwilling to die and wanting to see his daughter, ______.A．drove him onB．that drove him onC．with which to drive him onD．where to drive him on

未分类题Marys aunt told her that it was ______ that she was brought up after her mothers death.A．a retired old professorB．from a retired old professorC．with a retired old professorD．by a retired old professor

未分类题Never before______ so many people applied such abstract mathematics to so great a variety of problems.A．haveB．hadC．hasD．have had

未分类题The speed of communications today,______that of yesterday, has greatly altered the manner in which business today is conducted.A．as opposed toB．in correspondence toC．contrary toD．in proportion to

未分类题After his death, his papers—including unpublished articles and correspondence—were______at the library.A．depositedB．attributedC．involvedD．buried

未分类题He couldnt______his father that he was telling the truth.A．guaranteeB．ensureC．convinceD．persuade