If he_____hard in the past five years,things wouldn't be going so smoothly A.had not been workingB.was not working C.has not been working D.were not working这道题选A,我选了B,为什么选A,选其他的为什么不对呢

If he_____hard in the past five years,things wouldn't be going so smoothly A.had not been workingB.was not working C.has not been working D.were not working这道题选A,我选了B,为什么选A,选其他的为什么不对呢 Do you ( r ) the actor ,the funny man in the movie If you are th e only one If we loved again I swear I'd love you right I'd go back in time and change it but I can't So if th Could you tell me if there is a flight in the morning on Nov.26th?同义句转换Could you tell me if there is a flight ___ the morning ___Nov.26th? Marxist Philosophy in 19th in the 19th是什么意思 hunan is in ---th china 请问下面这段论述出自孔子的哪篇语录?其原文是什么?谢谢!if there be righteousness in the heart there will be beauty in the character.if there be beauty in the character there will be harmony in the home.if there be harmony in th 英语翻译In a list of numbers,the first number is 3.the second is 4.and each subsequent number is the sum of all the proceeding numbers in the list.If the 20th number in the list is x.what is the 25th number in the list? 一道GRE数学In a list of numbers,the first number is 3,the second is 4,and each subsequent number is the sum of all the proceeding numbers in the list.If the 20th number in the list is x,what is the 25th number in the list?A 7x B 16x C 32x D 35x E If teh n-th prime number is 47,the n 怎么译这个 If the i-th eigenvalue is real If only you were born on August 16th. Who comes ____(one) in th exam MarCh 12th( )(on/in)China in the 16th century什么意思 in the 20th century是什么意思 Europe in the 18th century是什么意思