he spent one hour in it.one能不能改称a

难道可以说He spent one hour in finishing his homework！？finish作为瞬间动词，怎么能用one hour 修饰 Le He Ho He spent the whole night ___________TV. He spent the whole night ___________TV He spent a hour reading the letter He spent the major part of a year abroad. he spent all his time reading the book ____ he spent much time on his spoken English(act) he's the one 选择：He spent seven days and nights in the wind and snow, ___.