It usually takes Tom about an hour to do his homework every day.改为同义句:Tom usually ( ) about an hour

题目

It usually takes Tom about an hour to do his homework every day.改为同义句:Tom usually ( ) about an hour ( ) his homework every day.
主要要求：详解,答案我是已经知道了.

答案

It usually takes Tom about an hour to do his homework every day.改为同义句:
Tom usually ( spends ) about an hour ( doing ) his homework every day.
固定用法：
it takes sb some time to do sth 花费某人多长时间做某事.
= SB spends some time (in ) doing sth / on sth 某人花费多长时间做某事.
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