题目

完成对话。在对话空格中填上适当的单词，使对话完整正确。一空一词（含缩写词）。把答案按编号依次填入答题卷的方框里。(Dale and Tom are at the Lost and Found case in their school. A—Dale B—Tom)A: Excuse me, Tom. 【1】 that?B: It’s a pencil box. Is it yours, Dale?A: What’s in it? Let me see. No, it isn’t my pencil box. Because I don’t have a 【2】 eraser.B: What color is your eraser?A: It’s black. I like this color. Maybe this pencil box is Helen’s. She has white erasers.B: Who’s Helen?A: She’s my 【3】, my uncle’s da省略乘号，写出下面各式． (1)a×x×6 (2)a×4×b (　　) (　　)