用给出单词的正确形式填空。

1. What is your first ______ (impress) of Miss Lin?

2. Bad ______ (luck) ! She was badly hurt in the accident.

3. Fire and water may be good ______ (servant), but bad masters.

4.I’m ______ (pleasure) to tell you that you've got the job.

5. To see is ______ (believe).

食品运输工具应当保持通风，防止食品在运输过程中受到污染。