神马品牌网东风16一颗导弹多少钱:英语填空题
来源：百度文库 编辑：神马品牌网 时间：2024/05/04 05:38:52
John (go) to college to study more about electricity after radios (invent)
went
were invented
John (went) to college to study more about electricity after radios (were invented).
1.goes
2.invented
John went to college to study more about electricity after radios were invented.
John went to college to study more about electricity after radios had been invented.
went
were invented