阅读下列对话, 根据首字母提示用适当的单词完成句子, 使对话完整、通顺。

A: Excuse me, can you tell me 1 s____ about you and your family?

B: No problem.

A: When 2 d____ you come to China?

B: I came here the year before last.  I have been here 3 f____ two years.

A: 4 D____ you like Chinese food?

B: Yes, I like Chinese food very much.  My favorite food is Malatang.  I have

5 e____  it four times this month.

A: 6 D____ your husband live with you?

B: Yes, but he has 7 g____ to Shanghai.  He likes China, too.  He has been

8 t____  many famous places in China.

A: What do you do?

B: I am a teacher.  I’ve 9 w____ in this school for one and a half years.

A: Thank you for 10 t____ me about your things.  

B: You’re welcome.

代数式a²﹣$\frac{1}{b}$用文字语言表示为____ .

       抱怨恰如一股阴冷潮湿的黑雾，足以     他的双眼，足以     他的心智，足以     他的成长，最终让他在怨天尤人的泥潭里越陷越深。