来自戚宗锋的问题
【therobotshavebeensenttorepairthedamagednuclearpowerstationinJapanItwasthefirsttimethattherobots__havebeensent____________torepairthedamagednuclearpowerstationinJapan.横线处为什么用现在完成时?横线处改为】
therobotshavebeensenttorepairthedamagednuclearpowerstationinJapan
Itwasthefirsttimethattherobots__havebeensent____________torepairthedamagednuclearpowerstationinJapan.横线处为什么用现在完成时?
横线处改为hadbeensent
不好意思打错了
3回答
2020-09-20 15:22