文具类词汇pen/pencil/ruler等 — 英语填空题
题目
读一读，选出合适的单词填空（每词限用一次）：pen, ruler, pencil, is, not。Amy: ___ this your pen? Bob: No, it isn't. My pen is blue. This pen is red. Amy: Oh, sorry! Is this your ___? Bob: Yes, it is! I draw lines with it. Thank you!