离吃午饭还有多久？
How long is it from here to the station?
从这儿到车站有多远？
How long is it since he left this school?
他离开这所学校有多长时间了？
它有多长？
How long is it since we last went to the theatre?
我们多久没去看戏了？
How long is it before we land?
我们还有多长时间降落？
它还会持续多久？
How long is it since you smoked?
你戒烟多久了？（或你多长时间没抽烟了？）
How long is it gonna last this time?
这一次能坚持多久呢？
How long is it since I saw you last?
我上次见你到现在有多长时间了？
护照有效期是多久？
How long is it from Beijing to New York?
北京到纽约，多长时间？
How long is it to downtown from the airport?
从机场到市中心要多长时间？
Tell me more about the Great Wall. How long is it?
告诉我更多关于长城的情况吧。它有多长？
How long is it since you left your primary school?
你小学毕业有多长时间了？
How long is it since the electric computer came into use?
电子计算机开始应用到现在已有多久了？
How long is it? It's about six thousand seven hundred kilometres.
它有多长？它大约是六千七百公里长。
How long is it since I shut myself in here? 'she asked, suddenly reviving.
“我把自己关在这儿有多久了？”她问，忽然精神恢复过来。
How long is it since I shut myself in here? 'she asked, suddenly reviving.
“我把自己关在这儿有多久了？”她问，忽然精神恢复过来。
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