______ talk to your classmates in class.
No
Not
Don't
Doesn't
talk to 意为“跟某人讲话”，classmates意为“同班同学”，题目在这里考查的知识点为祈使句，在动词原形前加don't，故答案为C。
— What class are you in?
— I'm in _____.
grade seven class three
class Three grade Seven
Class Three Grade Seven
Grade three Class seven
表示“七年级三班”要用 Class Three Grade Seven。class、grade 和基数词的首字母都要大写，故答案为选项C。