the robots have been sent to repair the damaged nuclear power station in JapanIt was the first time that the robots __have been sent____________ to repair the damaged nuclear power station in Japan.横线处为什么用现在完成时?横线处改为

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therobotshavebeensenttorepairthedamagednuclearpowerstationinJapanItwasthefirsttimethattherobots__hav

the robots have been sent to repair the damaged nuclear power station in JapanIt was the first time that the robots __have been sent____________ to repair the damaged nuclear power station in Japan.横线处为什么用现在完成时?横线处改为
the robots have been sent to repair the damaged nuclear power station in Japan
It was the first time that the robots __have been sent____________ to repair the damaged nuclear power station in Japan.横线处为什么用现在完成时?
横线处改为 had been sent
不好意思打错了

the robots have been sent to repair the damaged nuclear power station in JapanIt was the first time that the robots __have been sent____________ to repair the damaged nuclear power station in Japan.横线处为什么用现在完成时?横线处改为
had been sent是对的.it was the ,time that 用过去完成时.

事情已经发生,第一次干什么事,用过去时也没问题

The future robots will have __________ work to do the robots have been sent to repair the damaged nuclear power station in JapanIt was the first time that the robots __have been sent____________ to repair the damaged nuclear power station in Japan.横线处为什么用现在完成时?横线处改为 will people have robots Events for You, From Us While you've been carving jack-o-lanterns, our robots have been picking out Robots have found application for the exploration of the outer space.语法分析Robots have found application for the exploration of the outer space.是Robots have found application of the outer space for the exploration吗? Robots are in the Robots are in the Robots are in the people in the future have their own robots.为什么没用 will have 谁知道Do you think people will have robots in the future?为什么不说成Do you think if people will have robots in the future thanks very much people in the future have their own robots这句话为什么不加will,不是应该people in the future will have their own robots吗 首字母填空people have been intested in robots for quite some time.People have been interested in robots for quiet some time.Scientists are always inventing new and better robots.It is known that robots p____ an important role in our lives.First will people have robots? 是什么意思? 英语翻译Are the robots now have the same feeling as humans?翻译 The sick have been crued I have been around the If we have robots,we can finish the work with ______ people and _______ time. People will have robots in the future (就画线部分提问