1. (2017九下·盐都开学考) 根据句意和汉语提示写出单词，完成句子。

1. （1） somebody sometimes does something good.(在某处)
3. （2） The teacher knocked at the blackboard to catch our .(注意)
5. （3） You should wash your hands before eating， to guard disease (对抗)
7. （4） With the of science and technology， our life is becoming more colourful. (发展)
9. （5） I found a dog on the street yesterday and now I'm trying to find its owner. (丢失的)