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.