广西宽带网上营业厅:Two hours 是什么？

Two hours 是什么？ Two hours到底是什么？【ˇ～ˇ〗 Jack spends two hours _____housework. He will be back in two hours. she spent two hours searching the present . I think the homework will ? us about two hours. He can get up for abour two hours each day , Father___(放松)two hours after lunch,before afternoon work. two and a half hours' walk可不可以说two hours and a half's walk 改错:My brother spends two hours to go to school by bike every day.