精选优质文档-倾情为你奉上阅读下列材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。Mum: (putting on her coat) Im going to have to go down to the shop for more bread. Alan: Why?Mum: Im not sure what 1 (happen). I made some sandwiches earlier and left them on the table 2 I went to answer the phone. But someone must have taken them because theyre 3 (go). Alan: Oh, it must have been Dad. Im sure he was in the kitchen 4 (early).Mum: No, he went off to his tennis match before I finished 5 them, so
