您要查找的是不是：
- How long has he held office? 他已任职多长时间了?
- How long has he been away from home? 他离开家多久了?
- How long has he been suffering from poor hearing? 他听力不好有多长时间了?
- How long have he been back from abroad? 他回国多久了?
- Doctor: One ear or both ears? How long has he been suffering from poor hearing? 一只耳朵还是两只耳朵都听不清?有多久了?
- How long has he been in office? 他任职多久了?
- How long has Jim gone in for collecting stamps? 吉姆爱好集邮有多长时间？
- How long has he had his stall? 他担任牧师职位多久了?
- 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 has she been an office worker? 她做上班族有多久了?
- 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?
- How long has your brother been a soldier? 你兄弟当了多长时间的兵了?
- "How long have you been doing this?" he pursued. “你做这事多长时间了？”演讲家追问。
- How long has it been since you've heard from your daughter? 从你上次接到你女儿的信以来有多长时间了？
- How long has he been away? 他去多久了?
- How long has he been ill ? 他病了多久?
- How long has she been in your employ (ie employed by you)? 你雇用她多长时间了?
- How long had they been singing? He wondered. 他不知道它们已经鸣唱了多长时间。
- How about Mary? How long has she lived there? 玛丽怎么样？她在那儿住多久了？
