用所给词的适当形式填空。 1. He jumps _______(high) than the other boys in his class. 2. She can sing ______(well) than her music teacher. 3. My teacher has _____(many) books than me. 4. My room is not as _________ (big) as my brother' s. 5.This book is not as _____________ (interesting) as that one. 6. Practice as __________ (much) as you can.