How long have they built these highrises?(被动语态)How long _____ these highrises _____ _____

known,how long,have they,each other how long have they 还是用them how long have they 还是用them —have they studied English They have studied English for three years.A:How long B:How soon How long have they ___?A.been married B.got married How long have they _____ the computer?A.bought B.had C.borrowed D.sold how long have they been dating和how long have they dated?区别?how long have they dated?也不一定以后他们就不date了啊? —Could you tell us_______?---For more than ten years.A.when have they got married B.how long they have been married?C.when they had been married?D.how long they had got married?选择的原因也说下吧. 速度_____will they have another meeting?-In one week’s time.A.How much B.How soon C.How often D.How long理由理由,急 How long have they built these highrises?(被动语态)How long _____ these highrises _____ _____ They have long hair? ______David and Vicky ____ marriedA how long were,being B how long have,gotC how long have been D how long did,getRainforests______ and burned at such a speed that they will disappear from the earth in the near futureA cut B are cut C are being cut D How long ____each other before they _____ marriedA have they known ,get B did they know ,were going to get C do they known ,are going to get D had they known ,got How long can they live? ( ) 3.--- How long have they ______ France?--- For about half a year.A.been to B.gone to C.gone in D.been in ---how long ___ each other before they ___ married --- For about a year.a.have they known ; get b.had they known ; got为什么要用b不用a 怎么理解的? How long have you been I am not sure how long they _.A.have marriedB.have been marriedC.have got marriedD.married为啥?