根据句意及首字母提示在横线处填上恰当的单词，使句子意思完整，语法正确。
1. If you want to drive a car, get the drive's l______first, please.
2. It was s______ of you to believe in him. He is not an honest man.
3. My brother has been a Party m______ for ten years.He joined the Party when he was a college
student.
4. We want some v_____ to help the old man.
5. We should know the i_______ of studying hard, or we can't get good grades in the exams.
6. We need to conccntrate more on our s________ than other things if we want to get good grades.
7. At p _____ pollution is a serious problem. We should do something to protect the environment.
8. Do you have any e_______ in keeping a pet? I think it's hard work for me.
9. It's easy for us to be s_________ in summer because it's too hot.
10. No one knows the r_______ to this question. It's too difficult.
11. we all hope that we can a_________our dreams by working hard.
