The room on the second floor is used ____watching videos.介词填空是不是to,for都行，分别什么时候用？

on the room,还是at the room The music room is on (one)floor. My room is on the first_____. The Music room is on (the third floor)提问 ______ ______ is the Music room on? the music room is on the the third 句型转换 1,There is a shelf in the corner of the room.There___some__in the corner of the room.第一题是改为复述句2,Can you tell me how Ican get to the park?改为同义句Can you tell me —— —— ——the park?3,Please take the seco ,The art room and the music room is on the firstfloor哪里错了? The students are working on a math p________in the room. the music room is on the (two) floor is,on,reading room,the,the,floor,second.连成一句话 Art room,the,floor,second,on,is,The排列句子 为什么是by the light of the room而不是on which room is darker the one on the right or the one on the left? He cleaned the room on Sunday .划线部分提问划线部分为cleaned the room , They are in the living room,on the sofa.中on the sofa 作什么成分? 4.The music room is on the first floor.(对on the first floor提问? 选出与句中画线部分意义最相近的解释,并将其标号填入题前括号内.Take the second turning on the rightA. Go along the second turning B. Walk down on your second turningC. Turn right at the second turningD. Turn left on the seco which room is darker,the one on the right or the one the left?