您要查找的是不是：
- How long will our food supplies hold out? 我们的储粮还能维持多久?
- Thank you. How long will this offer be open? 谢谢。这个报价的有效期多长？
- How long is the post tenable for? 这个职位任期多长？
- How long do you intend to stop with the firm? 你打算还为公司工作多久？
- How long does it take him to drive to work? 他开车去上班要用多长时间？
- How long does it take to go there by bike? 骑自行车去那里要多长时间？
- How long does it take to go to the airport by taxi? 坐出租汽车去飞机场要多长时间？
- How long has Jim gone in for collecting stamps? 吉姆爱好集邮有多长时间？
- How long is it since we visited your mother? 自从我们看望你母亲以来到现在有多长时间了？
- How long will it take to go there by ship? 乘船到那里去要花多长时间？
- How long will the discharge of the cargo take? 卸货需要多久？
- I can't recall how long it has been. 我回忆不起来多长时间了。
- How long has Alice been going with Adam? 艾丽斯和亚当交了多少时候朋友了？
- How long will this fine weather hold? 这样的好天气能维持多久？
- How long will it take to get to your house? 到你家要多久？
- How long will our food supply hold out? 我们的食物供应能维持多长时间？
- How long does it take to fly from here to Japan? 从这里飞到日本要多久？
- How long does this train stop at Zhengzhou? 这列火车在郑州要停多久？
- How long has the present director been at the helm? 现任主任掌权多久了?
- How long has that man been at the helm? 那人掌权多久了?
