形容词、副词比较级与最高级练习一 单选1. This box is_ that one.A. heavy than B. so heavy thanC. heavier as D. as heavy as2 When we speak to people, we should be .A. as polite as possible B. as polite as possiblyC. as politely as possible D. as politely as possibly3 This book is_ that one, but_ than that one.A. as difficult as; expensiveB. as more difficult as; more expensiveC. as difficult as; more expensiveD. more difficult as; as e
