xiexieThough his faher ______for many years……A has retired B

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xiexie
Though his faher ______for many years……
A has retired B has been retired 为啥要be 而不选A?
--Yeterday was Saturday ,you ______to work.
--I thought it was Friday
A didn‘t have to go B needn’d have gone
In order to host the World‘s Fair ,the city___bulid a huge exhibition centre
A must B should C need BC错哪了?

第一题 retire不是延续性动词用be表示状态
第二题我觉得选B 本不需要去,但他去了
第三题应该是从语义看的
以上均为个人观点……

xiexieThough his faher ______for many years……A has retired B His grandfather_for many years.A.died B.had died C.has been He _____ his hometown for many years .( A has been away B ha 英语翻译A retired teacher received many letters from his former ( )How long has your faher been a worker?A.In 1990 B.for 199 Uncle Li _____ I worked three years ago has retired now.A.wh 30.This machine, ______for many years, is still working perf This machine,______for many years,is still working perfectly 30.This machine,______for many years,is still working perfec Last week he made a ( ) mistake.His faher very hungry. He has lived ___ for many years.A.to abroad B.in abroad C.on He;s worked in this factory for many years ------ he?A.has B