They lived here (for about four years).对括号里的时间提问____ _____ _____they live there

问题描述:

They lived here (for about four years).对括号里的时间提问
____ _____ _____they live there

How long did they live there?
问时间长短用How long
问频率一周几次 用How often

How long had they lived here?

How long did they live there?(for后加时间用how long 提问)

How long have they lived there?