This syetem is not support是什么意思

This syetem is not support是什么意思 this is not will`s is this ( ) watch no,it's not ( ) This is not Mary's dress.(变为一般疑问句） This question is not difficult. It's very s______. 这个句子对不对：This bag is not Tom's. This is my new b .It's not very b , you syetem has been modified please remove the modification to play on this server code this is not this is not Is not this this is not a this.is.not.a. IS this your cup?NO,it's not mIS this your cup?NO,it's not m______? is this your bicycle,david?no,it's not _____.it's helen's. 补全对话 This is Liu Ling.I ( )this morning,but he's not in. 1.Is this your english book?no,it's no.2.this not is your pen is white 改错 Is this Lucy's schoolbag? No,it's not hers.hers这一个用的对不对?