It has been used everywhere in the world.是个什么时态?

it has been used和it has been in use有什么区别吗 英语翻译Every possible means____to work out the problem,but it is too difficult for usa.is used b.are used c.has been used d.have been used has been used和has used有什么区别, what can be used after it has been broken?不是翻译句子 As everyone knows,English is very important today.It has been used everywhere in the world. It has been used everywhere in the world.是个什么时态? has been used,has been using的区别 has been used to detect gold,这是什么时态?句中的used to 是表示过去常常做某事吗?A new machine called 'The Revealer' has been invented and it has been used to detect gold which has been buried in the ground.这句中的it has been u This username has already been used是什么意思 which 后面为什么还用has been 这个时态,我认为应该用过去完成时A new machine called 'The Revealer' has been invented and it has been used to detect gold which has been buried in the ground. I have been used to it. We have been used to it sadly 选择：Every possible means ( ) to prevent the air pollutionis used?are used?has been used?have been used? Every possible means____to work out the problem,but it is too difficult for us.A.is used B.has been used 为什么选B而不选A. it has been since.用法 It has been in my it is/has been= It's has been accepted