that is a pen (变为复数）

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• would you like some pears?--No,thanks.I think there ___ enough for usA.is B.are C,has been D.had beenc是不是应该改为have been因为pears 是复数,B也错了,因为要用完成时态请问,你觉得呢?
• 变为一般疑问句:It often snows in Beijing.
• (1/2)her father told her he________.A.bought her a pen.B.would buy her
• 一道关于单复数的英语选择题you can recognize a tree by the __ of its__A shapes leaves B shape leaf Dshapes leaf
• All but one ____ here.答案是are,all 单独作主语谓语动词的单复数情况如何?All that glitters is not always gold.这儿就用了is 啊
• How ( )legs are there in a bee?Six.How ( )is it from your home to your school?A bout 4km.How ( )do you have Olympic Math?Twice a week.How ( ) is this pen?It's 18 yuan.
• 复数z=(m-8m+15)+(m²-2m-15)i在复数平面内的对应点为z.(1)实数M为何值时,复数Z为纯虚数.(2)当点Z于点A(1,-2)落在同一象限内,求实数M的取值范围特急
• 设复数z=(m^2-3m+2)+(2m^2-5m+2)i(m属于R) 若z对应的点位于复平面第四象限,求m取值若p是曲线y=2-lnx上任意一点,则p到直线y=-x的最小距离是
• 甲、乙两种物质的溶解度曲线如图所示．下列叙述正确的是（　　）A. 依据溶解度曲线可判断，甲的溶解度比乙的大B. 将甲、乙的饱和溶液从t2℃降到t1℃，析出甲的质量大C. 将t2℃时甲的饱和溶液变为不饱和溶液，可采取降温的方法D. t1℃时，甲和乙的饱和溶液各100g，其溶质的质量一定相等
• 你喜欢草莓吗?翻译成英语草莓用不用变复数
• it's h_____ in summer.You can go swmmer.you can go swimming in the riverit's h_____ in summer.You can go swmmer.you can go swimming in the river
• 连词成句：is summer for good swimming It in