问题补充：
We must the teacher says in class.
A. pay attention to
B. pay attentions to
C. pay attentions to what
D. pay attention to what
答案：
A. pay attention to
B. pay attentions to
C. pay attentions to what
(答案→)D. pay attention to what
解析：本题考查的是pay attention to 固定词组的用法，同时还考查了特殊疑问句做宾语从句的用法。故选D
