He spends two hours on his homework.
It takes him two hours for him to do his homework.
祝你学习进步，更上一层楼！ (*^__^*)
不明白的再问哟！请记得采纳，多谢！
It takes him two hours to do his homework.
A lot of goods and materrials are collected for the victims by the kind people.
The kind people collect a lot of goods and materrials for the victims.同义句转换
A lot of goods and materrials for the cictims are collected by the kind people.
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