英语选择题,要说明选择理由

英语选择题,要说明选择理由1. —Is that your eraser? —No, ______ is red. It must be ________. A. my , somebody else B. mine , somebody else’s C. mine , someone else D. my , someone else’s2. The contest ________ during Beijing Olympic Games. A. will be held B. was held C. will be had D. hold