it took him quite a long time to finish the wor(改为同义句)

问题描述:

it took him quite a long time to finish the wor(改为同义句)

it took him quite a long time to finish the work.(改为同义句)
完成这项工作花了他很长一段时间.
其中it是形式主语,而后面的不定式“ to finish the work”才是真正的主语;
He spent quite a long time finishing the work.