写作 

   下午，在放学的路上，你(Bob)遇到了同学Gina，你们相互问候后，看到了个红色的格尺,你们用新学的句型对话。她问你格尺用英语怎么说，并请你拼写，并问了它的颜色是什么。要求语句通顺，无单词及语法错误，注意大、小写及标点符号的使用。

Bob:                                                 

Gina:                                                 

Bob:                                                  

Gina:                                                 

Bob:                                                 

Gina:                                                

Bob:                                                

Gina:                                               

Bob:                                                 

Gina:                                               

Our teachers were very happy because ______ failed the exam.

当时，人们买衣服要凭布票，且数量有限，色彩和样式也很单调。大家都穿着千篇一律的灰色中山装或蓝色解放装，被形容为“蓝（灰）色的海洋”。这种现象普遍存在于我国（    ）