问题
选择题
Thinking that you know _________ in fact you don’t is a serious mistake.
A．what
B．that
C．when
D．however
答案
A
本题考查学生对主语从句和宾语从句的穿插理解。在that you know _________ in fact you don’t宾语从句中缺少一个能承前启后的联系；同时又作know和you don’t know的宾语,因此只有A项,what疑问代词最充分。