英语困惑困惑4.I have not found my book yet;in fact ,I am not sure_

英语困惑困惑
4.I have not found my book yet;in fact ,I am not sure____ I cound have done with it Awhether BwhyCwhat Dwhen 选什么?为什么?如何翻译这个句子 5.“____”for many years ,the writer suddenly became famous Ahaving ignored him Bto be ignored Cto have been ignored DHaving been ignored 选什么?为什么?如何翻译这个句子 6.John often attends public lectures at the University of Oxford ,chiefly____ his English Ato improve Bimproving Cto have improved Dimproved 选什么?为什么?如何翻译这个句子 7.It was suggested at the meeting that effective measures____ to solve the problem Awere takenBbetaken Cmust be taken Dtake 选什么?为什么?如何翻译这个句子 8.____who she was,she said she was Mr.Johnson`s friend Aasking Basked Cto ask DWhen asking 选什么?为什么?如何翻译这个句子 9.The moment we____ your money ,we`ll send you the book AWill get Bget C Got Dare getting 选什么?为什么?如何翻译这个句子