the famous singer is is singing for ---- in the ----- hospital 用children和child填

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• the famous singer is is singing for ---- in the ----- hospital 用children和child填
• the famous singer is is singing for ---- in the ----- hospital 用children和child填
• 用下列短语组成一篇文章（英语）开头已给出.Sally Brown / a young woman / wants to be a professional singer / as a volunteer,sings at a local hospital / cheers up sick people/ also sings at schools / ran our of money for singing lessons / came up with ideas for making money / put up signs asking for singing jobs / also called up parents offering singing lessins for children / now will be able to continue her lessons / will be able to become a professional singer开头：Sally Bro
• Write an article using the notes below.Tell what happens to Sally.Sally Brown,a youngSally Brown\ a young woman\ wants to be a professional singer\ as a volunteer,sings at a local hospital\ cheers up sick people\ also sings at schools\ ran out of money for singing jobs\ also called up parents offering singing lessons for children\ now will be able to continue her lessons\ will be able to become a professional singer用下面的信息写一篇文章，说明塞利发生了什么事情。
• 对(tanx)(secx)^2求积分,我算出2个结果,一个是1/2(tanx)^2,一个是1/2(secx)^2；这两个结果都对吗?
• 已知直线l的方程是3x+2y+6=0,求l的斜率,l与坐标轴围成的三角形的周长和面积