spend sth. on doing sth.正确吗?

《牛津高阶英汉双解词典》(第六版)中有这句话,但我学校的老师们都说它不正确。

spend sth on doing sth.这句话和笼统。说错也行。一般用法是:
spend some money on sth/ on doing sth.(花钱)
spend some time on sth/ in doing sth.(花时间)
而且"on doing" and "in doing" in,on 都可以省略。
但是老师说错也不对!!!
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第1个回答  2008-01-13

spend doing sth.
spend on sth.
第2个回答  2008-01-13
spend [in] doing sth.
spend on sth.
第3个回答  2008-01-13
spend in doing sth.
spend on sth.
第4个回答  2008-01-13
正确