题目内容
Sam spends two hours _______ his homework every day.
A. to do B. doing C. do
B
解析试题分析：句意为：山姆每天花两个小时做作业。在英语中，spend---doing sth是固定搭配，表示“花……时间做某事”。故选B。
考点：考查非谓语动词。
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