问题
选择题
They spent as many hours as they could ___their lessons.
A.study
B. to study
C. studying
答案
答案：C
题目分析：句意为：他们尽可能地多花几小时时间学习功课。spend time doing sth是固定用法，表示“花时间做某事”。故选C。
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They spent as many hours as they could ___their lessons.
A.study
B. to study
C. studying
答案：C
题目分析：句意为：他们尽可能地多花几小时时间学习功课。spend time doing sth是固定用法，表示“花时间做某事”。故选C。