i watched the train ____ in the distance on the platform and then retured home.答案是disappear 为什么不能用过去式disappeared?disappear字典里只有动词啊.

I watched the train until it d in the night fog in the distance. d后面是空 谢~~ I watched from the front of the train passes over I would like for a long time Belongs to our past I watched from the front of the train passes over I would like for a long time Belongs to our past Really the same as the train passes over But also wi ——Did you go to the station to see her off?-------Yes,I watched the train until it______.横线上用disappear的适当形式填空. the books(movies)I read(watched). the train i ride 歌词 过去式的动词三单We watched the train leave(为什么不用leaves?) the station. They( ) the train until it disappeared in the forest.为什么是Watched而不是observed The old woman ___the train until it disappeared in the distance.添watched 我想添observed They___the train until it disappeared in the distance .为什么用watched而不是saw He watched __as the train left without him.( help)如题,完形填空, i watched the train ____ in the distance on the platform and then retured home.答案是disappear 为什么不能用过去式disappeared?disappear字典里只有动词啊. ()is quick,I think.A、take the train B、Takes a train C、takeing the train they ()the train until it disappeared in the distance.A.saw B.watched C.noticed D.observed They _______ the train until it disappeared in the distance.A.saw B.watched C.noticed D.realized i can( )the last train back home I have watched the movie.改为现在进行时. a)the books(movies)i red(watched怎么写) I watched TV the _____ （整个的）afternoon yesterday.