根据句意和首字母填入补全单词。

1.  I don't b_______ he can work out this problem.

2.  Don't talk loudly,  your father is sleeping at the m_______.

3.  It's raining outside. Don't leave u_______ it stops.

4.  He was very poor before,  but now his life is i_______

5.  I'm sorry to h_______ that you are ill.

6.  You shouldn't study l_______,when you are tired.

7.  He is weak in English. He needs to i _______ it.

8.  —Sorry, Mr Li.  I arrive l_______  for class again.

    —It doesn't m_______

9.  Winter is coming.  It's g_______ colder and colder outside.

10.  —May I speak to Tom?

       —Wait a m_______,please.

11. Oh, d_______!  I think I lost my way.