问题详情：
![Hisparentswereworriedthathe]( "Hisparentswereworriedthathe")
His parents were worried that he _______too much time chatting on line.
A. spent B. cost
C. paid D. had
【回答】
A 句意：他的父母很担心他上网聊天的时间太长。本题考查动词的辨析。have不作“花费”讲；cost作“花费”讲时以物作主语；pay作“花费”讲时不接动词的-ing形式。sb. spend(s) some time (in) doing sth.“某人花费时间做某事”，是固定句式。
知识点：动词和动词短语
题型：选择题
