has been used,has been using的区别

has been used和has used有什么区别, has been used,has been using的区别 This username has already been used是什么意思 what can be used after it has been broken?不是翻译句子 He has been used to ------- here A.stay B.be C.live D.living he has been used to the life in the countryside.为什么be used to 后加名词 it has been used和it has been in use有什么区别吗 The problem (whether) this material can be used in our factory has not been solved.这是什么从句? The building which _____________ at present will be used for science A： is repairing B：has been r helix ISP Hosting may not be used concurrently with Distributed Licensing.The ISP hosting feature has been disabled怎么办 has been 选择：Every possible means ( ) to prevent the air pollutionis used?are used?has been used?have been used? the house where i used to live has been knocked This registration code has already been used by another user. mr green has been used to jogging_________ ( day) can be done has been Everything that can be done has been done 中can be done has been done has been 和has be有什么区别 has to be 和 has been 的区别