It’s necessary the dog’s fur and play with it for .
A. brushing, sometimes
B. to brush, sometime
C. brushing, sometimes
D. to brush, some time
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A. brushing, sometimes
B. to brush, sometime
C. brushing, sometimes
(答案→)D. to brush, some time
解析:第一空只能用不定式作主语(it是形式主语);sometime:过去或未来的一个时间点,some time:一些时间,即分开是“一段”, 相连为“某时”。根据句意,第二空前有介词for,应跟一段时间some time。故选D。