这个填什么?怎么翻译这句话?Before the first non-stop flight was made in 1949,it__necessary for all planes to land for refuelling.这句话的意思是什么呀？怎么翻译最好呢？为什么填此答案？

这个填什么?怎么翻译这句话?Before the first non-stop flight was made in 1949,it__necessary for all planes to land for refuelling.这句话的意思是什么呀？怎么翻译最好呢？为什么填此答案？ he had long ( )of becoming college student 括号内填dream 的什么形式 为什么 这个句话怎么翻译 que faire____ne pas grossir?中间应该填一个什么介词,这句话怎么翻译呢? here are some red sweaters and the green ones are（there）为什么填这个,这句话怎么翻译? it's the best words i never listened before 这句话怎么翻译? Where is ZhangLi staying before she goes back to Lanzhou这句话怎么翻译 no other people have ever done that before 这句话怎么翻译啊? It was the night before the composition was due.这句话怎么翻译 Before I could get off,the train began to move.这句话怎么翻译 there were over 20 minutes left before the bell rang 这句话怎么翻译 left 又怎么翻译 He ( ) ( read ) that book before.这个括号应该填什么? how he became prime minister had been prophesied thirty years before.请问这句话怎么翻译?HOW 在里面表示什么意思?谢谢! 这个后面怎么填?这句话啥意思? Pride goes before a fall.pride明明是形容词,怎么能做主语?before a fall有这种说法吗?什么意思?这句话一词不落源源本本的翻译是什么? i have never heard of that place before这句话 什么时态?为什么用这个时态？ 英语翻译这句话到底是什么意思,什么核电厂建设啊.这个Dpt.在这里怎么翻译? there is some time____ I miss you.这句话怎么翻译,空格里应该填什么?为什么? What brings back your interest ____ body building all of a sudden?这句话填什么?怎么翻译或解释