Bob and David are （ ） A ：in classroom B：in their classroom C

Bob and David are （ ） A ：in classroom B：in their classroom C we ( ) in the classroom.A all B are C are all D all are Tom and Mary are in a new f_____ classroom They sit in the classroom （ ）their teachers .A,listen B,to l they()in the classroom now A sing B are singing 1.I find there ( ) no students in the classroom A is B.are C where are their schoolbags?()are in the classroom 填什么 they are sitting in___ classroom now A.they B.their C.their I find Bob in the classroom 对划线部分（in the classroom）提问 A group of students are in their classroom.they are discussi they are doing their _____(homework) in the classroom their dictionaries are (in the classroom)对括号部分提问