They___the train until it disappeared in the distance .为什么用watched而不是saw

They___the train until it disappeared in the distance .为什么用watched而不是saw train train train waiting for you forever give up unt UNT是哪些单词的缩写 求详解几道英语语法题,不要只给答案1 Come and see me____ two or three___?A、for,days B after,daysC in,days'time D during,day time 为什么不选B2The train leaves at 6a.m.So I have to be at the station _____5:40a.m.at the latest.A unt They___the tram untik it disappeared in the distance.A.watchedB.observed 他们以这个科学家的名字命名了这颗星星.翻译They___the star____this____. train翻译 train是什么意思 train是什么意思? maglev train train是什么意思 Train是什么意思 train是什么意思 [wɔ:təmelən] [dəunt] [nəu] 音标 翻译 英语单词 Behind every girl's favorite song,there is an unt 急