They will be invited to my birthday party.Invited 后面为什么要加to呢?

They will be invited to my birthday party.Invited 后面为什么要加to呢? Will you come to the costume party tonight?__I won't come until I__.A.will be invited.B.can be invited.C.invited D.am invited. ---Will you go to the party?---Of cource I will if ( )A:having invited B:invited C:I was invited D:I will be invited别的为什么不对? Tomorrow they will be —Won't you go to Tom's birthday party tonight?—Unless_____A.invited B being invited C will be invited D to be invited We insisted on not inviting her ,while they insisted that she__A wasinvited Bwould be invited Cshould invite D be invited will you come to the dinner party?i won't come unless Jenny()?Awill be invited BinvitedCcan be invitedDis invited Will you come to the party?Of course,I will.A.If invited B if to be invited C if i was invited D if I will be invited为什么答案是A而不是D呢? Will you come to the dinner party?will you come to the party?I won't come unless Cathy ______.A.will be invited B.can be invited C.invited D.is invited 为什么B 不可以? I wonder when you____to Beijing.When you come,you___to our leavers' partyA.come; will invite B.will come;will be invited C.will come;will inviteD.come;will be invited 3.—Will you come to the dinner party?—I won’t come unless Jenny________ .　　　　A.will be invited B.can be invited 　　　　C.invited D.is invited(2004年安徽省) 英译汉they will be ice they will be sorry 是什么意思 Will you come to the dinner party?I won't come until Jim___.A.will be belived B.can be belived C.invited D.is invited will you go to Jenny's birtheday party?i would like to go if i ________ A will be invited B will invite C invite D am invited be invited to +place be invited是什么意思 be invited for