... five fine old short 11. cat dog fish book 12. markers ruler crayons erasers IV.Em h·y khoanh trßn 1 ®¸p ¸n ®óng: 1. ’’,thanks. A. Hi B. fine C. its D. five 2. She is my ’’.. A. you B. Peter C. friend ... d¹ng sè nhiÒu cña c¸c danh tõ sau: 1. this 2. she / he 3. a pencil case 4. a ruler 5. a marker 6. a boy 7. a cassette 8. a sneaker 9. a notebook 10. a table 11. a pen 12. a pencil 13. a book ... ,too. 10.Goodbye, Nam K.He’s my brother. 11.This is my friend,Ba. L.Hi,My name’s Hong 1’ 2 3’ 4’. 5’. 6’. 7’. 8’.. 9’.. 10’.. 11’.. VIII. Em h·y t×m tõ tr¸i nghÜa víi c¸c tõ sau: 1. open 2. sit...