Paul’s parents were worried that he too much time chatting on line.
A. spent
B. cost
C. paid
D. took
网友回答
(答案→)A. spent
B. cost
C. paid
D. took
解析：take 用于 it takes sb ... to do sth句型，仅指花费时间（three hours等），必须用it作形式主语，指代下文不定式内容；spend用于sb spend...on sth或者sb spend...in doing sth（in可以省略），spend的主语必须是人，可以指花费时间、也可以指花费金钱；cost用于 sth costs sb sth，主语必须是物，多指花费金钱，少数情况可指花费时间、气力，有时表示成本的消耗；pay的基本用法是：(1) pay (sb.) money for sth. 付钱（给某人）买……。 (2)pay for sth. 付……的钱。 (3)pay for sb. 替某人付钱。(4)pay sb. 付钱给某人。句意：保罗的父母担心他花费太多时间在网上聊天。结合语境可知选A。