問題詳情：
![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：他的父母很擔心他上網聊天的時間太長。本題考查動詞的辨析。have不作“花費”講；cost作“花費”講時以物作主語；pay作“花費”講時不接動詞的-ing形式。sb. spend(s) some time (in) doing sth.“某人花費時間做某事”，是固定句式。
知識點：動詞和動詞短語
題型：選擇題
