It takes me half an hour to do my homework.I ______ half an hour _______ _______my homework.(同义句)

问题描述:

It takes me half an hour to do my homework.
I ______ half an hour _______ _______my homework.(同义句)

spent (用的是过去式) in doing 不能用finishing ,因为dinish(完成)是个瞬间,不能用半小时来执行" 完成 "这个瞬间动作 而是花半小时来 做 这个作业 做是一个过程
另外:It take sb sometime to do sth 与 Sb spend smetime in doing sth 等价

spend in finishing

spend;in doing