this is___(i) ruler.where is___(you)?

this is___(i) ruler.where is___(you)? This is___ ruler?A.I B.my C.a my D.my 请帮忙回答,并说明理由, 1.Tom is___(I)mother's friend.2.This book isn't___(I),it is___(he) ___________ It's his,I thinkA.Whose ruler is this B.Where's his ruler? she is___(i)classmate. Whose ruler is this? Is this red ruler ( ( ) ruler is this? Is this your ruler? No,it isn't.（I）( )is atIs this your ruler?No,it isn't.（I）( )is at home. A:How are you?B:I'm fine.B说的话可换成I'm( ) ( )2.This is my ruler.换成This ruler is ( ) This is a ruler(对a ruler提问) ----- -----this? This is her ruler同义句This ruler __ __ . ThiS ruler is long.同义句 ThiS ruler （ ） （ ) this is( )ruler.写什么 What 什么什么 this ruler? This ruler is for Gao 用适当形式填空 This is___（I）new sweater.Is this___（she）用适当形式填空This is___（I）new sweater.Is this___（she）father? This rule is___ ___this case.(true)