Listen.There must be someone_____ in the classroomA.sings B.to sings C.sing D.singing

Listen.There must be someone_____ in the classroomA.sings B.to sings C.sing D.singing Listen there must be something (t )to get into our house 21页7.Listen ,there is a knock ------the door .It must be TomA.on B.to C.in 理由 I guess there must be someone _ outside the house.Let's stop to listen.A.speaks B.speaking There must be something wrong. I guess there must be someone( ) outside the house.Let's stop to listen.A speaks B speaking C spoke 说下理由 there must be someone in the room _(be)there there must be something wrong to it It must be there,---?反意疑问句 there must be 有被动语态吗 You must be there on time. There Must Be A Reason 歌词 there must be a use for my there must be some miscommunication中文意思 Consuming Fire (There Must Be More) 歌词 There must be somthing wrong with you There must be someone living here[同义句转换]There must be someone ______ _____ here 英语翻译是There must be rainy tonight.还是There must be raining tonight.