how long had the police taken to find his bicycle?这个句子结构怎么来的?有个had是干嘛的?

How long has she had the job?随便回答一个可以使 She has had the job for two years. pol. pol. pol. pol. 英语翻译How long had the police taken to find his bicycle? How long have you _______this book from the libarly?A.brrowed B.had How long have you _____ the car?选项：A started B bought C borrowed D had How long have they _____ the computer?A.bought B.had C.borrowed D.sold how long had the police find his bicycle这句话为何不对 How long has he ---------the job A found B changed C had How long has he ___(find;change;got;had) the job? They tired to find out( ) the new train ( ) A how far/how gone B how long/has gone C how far/wentD how far had /run —How long have you had the bike?—Since last week什么时态为什么用have和had？ How long is the forever? How long does the love HOW long is the marathon? How long _____ the watch?---For about ten yearsA.have you boughtB.have you hadC.had you boughtD.had you had