is ( )eraser.You should look after it .1your 2you 3a 4yours

This is my eraser. Is that_____(you) Lily’s eraser is here.Where is ______ (you) Yes,thank you .and that is my eraser --is that( )eraser?--yes,it,s( )eraser. It is an eraser. That is ( ) eraser. It is an eraser? what is this?It is eraser病句还有How are you?Fine thanks you is ( )eraser.You should look after it .1your 2you 3a 4yours how do you spell it it is eraser.it is 后面为什么是an 而不是/? Is that your eraser?(改为同义句）Is----------eraser-----------? 是This eraser is mine还是This eraser is my? This is ( )eraser. ( )eraser is in the pencil case . Is it( )eraser?No,it's not( ).It's( ).(you,I,he) I guess this is eraser. this is eraser的意思 That is my eraser.对my eraser提问 This is an eraser 对an eraser 提问