174wk 幼苗
共回答了20个问题采纳率：90% 举报
1年前
风_过无痕 幼苗
共回答了13个问题 举报
回答问题
He's been there twice before.就twice提问
1年前1个回答
he has been there [twice]就划线部分提问【 】he been there
1年前2个回答
He has been there twice 划线提问twice
两条英语难选择!1 I _____ there twice before I was 8.A have been to
1年前4个回答
he has been there teice （twice划线）
he has been there _twice____.
He has been there twice ________ 1982 They stayed here ____
this is Sam's ___visit to Beijing.he hai been there twice be
he must have been there before-----
HE MUST HAVE BEEN THERE BEFORE ,HAVEN'T HE?
1年前5个回答
He must have been there before.这句英文如何连读?
英语中反义疑问句he must have been there before ,hasn't he 和he must h
jack has never been to Disneyland before,but he _____ there
He has never been there before, _______ _______?
1.As she has never been there before,I’ll have someone____he
As she has never been there before,I'll have someone ____ he
几个反义疑问句的问题1.You must have been there before,haven't you He m
现在分词与过去分词的用法having been bitten twice by snakes before,the li
He`s never been there before,_________ __________?(完成反意疑问句)
1年前7个回答
你能帮帮他们吗
得意的水珠阅读答案像一张大蒲扇似的荷叶,舒舒服服地铺在水面上.有一天早晨,荷池里的鱼儿一打挺儿,溅起水花落在荷叶上.一颗
寒假日记100字1篇一定要100字哦
OBJECTLVES的意思和英标
什么是课题研究？我六年级做什样的课题研究比较好？跪求，必采纳
把一个圆沿半径平均分成若干份后,拼成一个近似长方形,周长增加20厘米,求长方形的周长.
精彩回答
设α、β、γ是互不重合的平面，m，n是互不重合的直线，给出四个命题： ①若m⊥α，m⊥β，则α∥β ②若α⊥γ，β⊥γ，则α∥β ③若m⊥α，m∥β，则α⊥β ④若m∥α，n⊥α，则m⊥n其中真命题的序号是___________
根据“31.2÷13=2.4”写出下面各题的商．
高数(工本)空间直线方程
f(x1,x2,x3)=2x1x2+2x1x3+2x2x3,求一正交变换x=py,将此二次型化为标准型.那是X
已知函数f(x)=1/3x^3+1/2x^2-2x+m的图像经过第一,二,三,四象限,则实数m的取值范围是?
