--Dad, I want to go out for dinner with my friends tonight.
--Keep in mind you have to be home by 9:00.
A. that
B. where
C. what
D. when
网友回答
(答案→)A. that
B. where
C. what
D. when
解析：句意：--爸爸，我想今天晚上和朋友去吃晚饭。--记住你得在9点前回家。Keep in mind后面是宾语从句，宾语从句中不缺成分，用that连接宾语从句，that不做成分，只是起到连接的作用，所以选A。