Could you please loudly in the library?
A. don’t talk
B. don’t say
C. not to talk
D. not talk
网友回答
A. don’t talk
B. don’t say
C. not to talk
(答案→)D. not talk
解析：talk谈话，强调两个人说；say说，强调说的内容；句意：请你们不要在图书馆大声说话好吗？固定句式Could you please后面接动词原形，表示请求你做某事好吗？用来提出某种请求，其否定表达一般是在原形动词前加not，结合语境可知选D。