It's about three years since they_here.是填came还是have been?

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It's about three years since they_here.是填came还是have been?
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It's about three years since they_here.是填came还是have been?
It's about three years since they_here.是填came还是have been?

It's about three years since they_here.是填came还是have been?
选came
since的四种用法
1) since +过去一个时间点(如具体的年、月、日期、钟点、1980,last month,half past six).例如:
I have been here since 1989.1989起,我一直在这儿.
2) since +一段时间+ ago.例如:
I have been here since five months ago.我在这儿,已经有五个月了.
3) since +从句.例如:
Great changes have taken place since you left.你走后,变化可大了.
Great changes have taken place since we were here.我们走后,变化可大了.
4) It is +一段时间+ since从句.例如:
It is two years since I became a postgraduate student.我考上研究生有两年了.

英语翻译This love (Yea,yea,yea)(I gotta holla about my girl full of ‘’mazing’) [note:amazing?](Yea,yea,yea) Let’s do it ch’allYea,it’s really taking me from high-lowLet’s see,where should I begin?The club on Friday night yoJust havi It's about three feet long and two feet it's about three hundreds metres long on the left It's about three kilometers away的问句 英语翻译(Yea) what's going on,2006,mario and nasty,brand new classic,(Yea) ride with us,it's about two guys and hot girls,yo keep it up keep it up,two step with me,come on,let's do it do it do it like this.1,2 baby clap ur hands.Everyboby let's g It's about three kilometres away from the school.画线部分提问.画线部分是about three kilometres away It's about ______ from here to there.A.three hours' drive B.three hour's drive C.three hours hours drive D.three hours drive It's about ( ) walk.A.three-hour B.three-hours C.three-hours' D.three-hours's给讲讲吧.谢谢! It's about -----from my home to school.A.there hours' walk B.three hour's walk C.three hours' walks D.three-hours walk 对划线部分提问(划线用“”代替)It‘s about “three kilometres away” It's about three years since they_here.是填came还是have been? It,s about three ___(kilometer)from here to the bus station. It's about three hours' _____ from Chengdu to Chongqing.A ride B walk C bus It's ________ a visit ______ Yunnan_______ three days.about to for 为什么? what the time now?It's three thirty a.too b.very c.much d.about it's four twenty-three it,s only three o, It's about three ____ kilometers from here to there?It ___ ___ one hour ___ ___my home