1 . To be honest, I find it difficult to be ________(长情的)about mathematics. (根据汉语提示单词拼写)

2 . Her decision to cancel the concert is b________ to disappoint her fans. (根据首字母单词拼写)

3 . Traditionally, duck is considered to have cooling properties, so it is a_________ for the hot summer months. （根据首字母单词拼写）

4 . Surprisingly, only some bacteria are harmful-many be_________（有益的）. （根据汉语提示单词拼写）

5 . She was deeply ____________ (羞愧) of her impolite behaviour at the party. (根据汉语提示单词拼写)

6 . Due to habitat destruction and hunting, the-dodo bird is now_____________（灭绝）, existing only in history books. (根据汉语提示单词拼写)

7 . Cutting back on the number of cigarettes you smoke every day will be b________ to your health. (根据首字母单词拼写)

8 . It was only when he was sent to hospital that he became fully a________   of the value of health. （根据首字母单词拼写）

9 . The lecturers are very ________(学识渊博的) and I learn a lot from them. (根据汉语提示单词拼写)