... A.What is this? B What this? C Whats is this? 23 A.This is a door B This is door C This a door 24 Is this your book? A.Yes, it is your book B Yes, it is my book C Yes,this is 25 A Is this a eraser? ... am thirteen C I am thirteen years old 14.Số 15 đợc viết là: A.fifteen B.fiveteen C.fifeteen 15 Giới thi u bạn la Ba với Lan, em nói: A.Hi,Lan This is name Ba B.Hi,Lan Ba is this C Hi,Lan This ... is my book C Yes,this is 25 A Is this a eraser? B Is this eraser? C Is this an eraser? 26 A This is a waste basket B This is waste basket C This is a basket waste 27 A Thats a my classroom B Thats...