三年级(下)期末复习卷一、选择正确的答案:( ) 1. -Is this your cake ? -Yes , _ _. A. it is B. it isnt C. this is( ) 2. Thats _ my lunch box . A. is B. isnt C. /( ) 3. -What is it? - _ a _ . A. This; doll B. Its ; doll C. Thats ; doll( ) 4. -Is that your crayon? -_, it _.新- 课- 标-第- 一-网 A. No ; is B. Yes ; isnt C. No ; isnt( ) 5. This _ a pencil. A. s B