It took him about two hours to do his homework.(改同义句)

问题描述:

It took him about two hours to do his homework.(改同义句)
He ___ two hours _________ his homework.

Spend和take的意思一样为:花费
Spend的过去式为:spent
spend doing something
It takes somebody sometimes to do something
所以正确答案为:He spent two hours doing his homework