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据意填词&根据所给词适当形式填空

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据意填词&根据所给词适当形式填空
1.Dogs can help us ( ) (find) ( ) (lose) people.
2.He stops at the ( )(cross) because of the red light.
3.Is it ( ) to cross the road now? Yes , there’s the grern man.You can cross the road( ).You are in ( ) when the green light on.(safe)
4.People have ( )(keep) dogs for ( ) (million ) of years.
据意填词&根据所给词适当形式填空
1.find(原型);lost(迷路的)
2.crossing(十字路口)
3.safe(形容词);safely(副词);safety(名词)
4.kept(过去分词);millions(上百万年)