yummy1987 幼苗
共回答了15个问题采纳率：80% 举报
1年前
闭眼旁观 幼苗
共回答了287个问题 举报
回答问题
The work has been finished since they came here
1年前1个回答
the girl has been a nurse here since ahe left school.对since
Mr.Smith has been here since the factory opened为
The picture has been here.It was here two years ago.用since该写
1年前4个回答
He has been here since yesterday.(同义句)He has been here for _
He has been here since 1996=（ ）（ ）9 years since he （ ）here
1年前6个回答
he has been here since yesterday对划
1年前3个回答
He has been here since yesterday.(对划线部分提问)
he has been here since five weeks ago.
He has been here since 1996 __ __ 9 years since he _
It has been 3 years since he came here.
1年前2个回答
he has been here since he left college.对since he left colleg
He has been here ___since yesterday.___
改为同义句：He has been here since six years ago.
He has lived here since 1992.这里为什么用has lived而不用has been livi
She has been living here since she bought a house.
He has been living here since last Sunday.(改为一般疑问句)
Jim ____ here since he came here.A.has been working B.works
1.Twenty years ------(pass)since Icame here.2.jim has been i
你能帮帮他们吗
将奇函数 f(x)＝Asin(ωx＋φ)(A≠0，ω>0，－ <φ< )的图象向左平移 个单位得到的图
m-2(3-2n) 去括号合并同类项,还有3题.
求极限当x趋向于0+时,分子上是1减3的x次方,分母上是3的次方加1
下列事例中利用热传递改变物体内能的是（ ） A．和平号空间站退役后坠入大气层与空气摩擦生热 B．冬天，用热水袋取暖，人
一个高1分米,底面积是12cm2 的长方体,计算体积
精彩回答
近年来，某社区相继成立了老妈妈协会、关心下一代协会、护绿协会等10多个“草根”协会，积极组织本社区居民，自主解决了不少“麻烦事”。“草根”协会的发展
下图表示各物质之间相互转化的关系。A和F是含有两种相同元素的固体，A为红棕色，F为黑色。C和E是含有两种相同元素的气体。B和D是固体单质，D能与稀盐酸反应。请回答下列问题：
某人因外伤出血，血色鲜红，血流较快，紧急的抢救措施是（ ）
What about having a picnic tomorrow morning?
三元一次方程 3x+4y+z=14 x+5y+2z=17 2x+2y-z=3
