题目

已知集合等于                       A．{2，3}                                                      B．{1，2，3}          C．{1，－1，2，3}                                        D．{2，3，x，y} 答案：B  His seat is next to _______and the bag on his seat belongs to_______.     A. mine, he       B. me; him       C. me; his       D. mine; him