it is fixed to the floor.中为什么要用TO呢?

Take It To The Floor 歌词 it is custom to take off the shoes 为什么用不定式呢?而不用that? It is also very important for you to share the floor in the she wants to join the music club to learn it.句中为什么要用to? 1.It is a good habit for children to s____ the floor every d on the first floor 中为什么要用“first”序数词呢 一个英语句子中:I an going to put it on the floor.句子中的p has it been announced when the plane is to take off中为什么用when It is time to(see)the film句子中see用何种形式,为什么? how to translate"fixed the dock" The roof of the house needs to be fixed.It's raining now.you he said,"of all the fixed stars,the sun is the nearest to ea