It take about twenty minute.
大约要20分钟
How long will it take about?
差不多要多久?
It take about twenty minutes by bus.
坐公共汽车大约要20分钟.
It will take you about 8 hours.
列车要开8个小时.
It will take us about 15 minutes.
离这儿不远.大概15分钟.
I would imagine the operation will take about an hour.
我猜想这个手术大概需要一个小时左右吧