No planes were able to take off or land. At 9:00 in the evening, all the l___ went out首字母填空

No planes were able to take off or land. At 9:00 in the evening, all the l___ went out首字母填空 If there were no steel,there ( ) no train,cars or planes.A.will beB.would beC.have beenD.are 看下英语句子用什么从句The sound of planes could be heard outside the city of Tangshan even when no planes were in the sky The sound of planes could be heard outside Tangshang even when no planes were in the sky 这句子是什 The sound of planes could be heard outside the city of Tangshan even when no planes were in the sky.这句话中有什么知识点,even是什么成分,when引导的是什么从句,或是其他的 were able to have done 为什么用would be able to ,如果用was able to 可以吗Byrd now knew that he would be able to reach the South Pole which was 300 miles away,for there were no more mountains in sight. 分析下列句子结构（主语,谓语,宾语……）1,The sound of planes could be heard outside the city of Tangshan even when no planes were in the sty.2,But the one million people of the city,who thought little of these events,were asleep as u were you able to keep them?翻译 No one加be able to,还是is able to? 英语翻译Bill was a very good pilot.He had been in the air force for several years,and had been very successful.Now he was sent to a small field in the middle of a forest,from which planes were able to attack the enemy very easily,for it was near if there were no No items were selected! No Compopents were 英文语法：be动词和助动词有什么区别?一个虚拟语气句子：If there was no gravity, we should not be able to walk,该句是错的,应该写成:If there were no gravity, we should not be able to walk.还有同种情况的句子：If Everyone ( ) run away from the burning building A can B is able C was able to D were able to be able do 的结构正确吗?eg.Those who were able to took advantage could & was/were able to do 的区别