1.up
2.down
3.to; from根据句意，用括号中所给的词的适当形式填空。1.The sthdents came into the classroom as soon as the bell ____________ (ring)2.The little boy stopped ______(cry ) at once when he saw his mother.3.When they see the film about the poor children's lives ,they all think they are _____ (luck) ones.1. started ringing2. crying3. lucky