您要查找的是不是：
- How long did you spend afloat? 你在海上待了多久?
- How long did you spend on your homework? 你做家庭作业用了多长时间?
- How long do you spend on your homework everyday? 你每天花多少时间做作业?
- How long do you spend on-line on average each time? 每次上网停留的时间?
- SiMen.beambean:How long do you spend on KZ per day and what is your motivation? 每天花多少时间在KZ上？你的目标是什么？
- How long do you intend to stop with the firm? 你打算还为公司工作多久？
- How long do you think we should spend there? 你觉得我们应该在那儿待多久?
- How long do you often spend on TV? 你通常花多长时间看电视？
- How long do you think this fine weather will last? 你看这样的好天气能持续多久?
- How long do you expect to be stay in China? 您将在中国停留多长时间？
- How long do you think they can hold their breath? 你认为他们憋气能憋多久?
- How long do you generally keep your offer open? 你方报盘一般保持几日有效？
- How long do you wash the head once? 你多长时间洗一次头？
- How long do you watch TV every day? 你每天看多长时间电视？
- All right. How long do you plan to stay here? 好的，您计划在这儿住多久?
- How long do you generally keep your offer open ? 你方报盘一般保持几日有效?
- How long do you have to wait for a No. 63? 乘63路车要等多久?
- How long do you plan to stay in Beijing? 你打算在北京停留多长时间?
- How long do you think the project will take? 你认为完成项目需要多长时间?
- How long do you think this cold spell will last? 你认为这种冷的时间会持续多久呢?
