Mum ,this letter is for you.能把for换成from吗

Mum ,this letter is for you.能把for换成from吗 Mum,this letter is _____you.A.for B.from C.to D.with this is a test letter? this is a test letter? Is this your mum?怎么回答? is this your mum no,__ __ Mum,this is my friend Eric.、“And Eric ,this is my Mum,Mrs Lopez.”哪句放前面? Mum ,where is my skirt?Is this your This is letter F(对 letter F提问） Mike.David.is.his.to.his.mum.letter.showing(连词成句)那么，Mike is showing his mum his letter to David . this letter is from my pen p___ Hi Sonia This is your letter letter,this,is,red连成疑问句 this is letter A.改为否定句 -What letter is this?的答句 this is a letter改为复数句 This letter is .jack jack' he 填空 this letter is limei linda