单选题 11.  Jack can't find his dictionary. He must have ______ it in the classroom.
【正确答案】 B
【答案解析】[考点] 词义辨析
lose：丢失；leave：忘了带，落下；forget：忘记；find：找到。根据句意可知，选B。
   杰克找不到他的词典了，他一定是把它落在教室里了。