1. 用方框中所给词的适当形式填空

army,    German,    lucky,    enemy,    marry

1. （1） The man joined the and became a soldier.
3. （2） He asked his girlfriend whether she would him.
5. （3） The man knows a lot about history.
7. （4） , the firemen put out the big fire in time.
9. （5） Jane and Sarah used to be friends but now they are .