It _______ me three years to draw the beautiful horses.
正确答案： A
本题解析：
cost 的主语通常是事或物 (包括形式主语 it) ;spend 的主语只能是人，不能是事或物; take 的主语可以是事或物 (包括形式主语 it) ，也可以是人。 cost 的宾语通常是钱， take 的宾语通常是时间，而 spend 的宾语则可以是时间或钱。这句话运用的句型是 it take sb sth to do sth。
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