用适当的关系词填写下面文章中的句子并体会它们的共同特征 1．A huge crack ____________________ was eight kilometres long and thirty metres wide cut across houses, roads and canals. 2．The number of people __________________were killed or seriously injured reached more than 400,000. 3．Then, later that afternoon, another big quake ____________________ was almost as strong as the first one shook Tangshan. 4．The army organized teams to dig out those _____________ were trapped and to bury the dead. 5．Workers built shelters for survivors _______________ homes had been destroyed.

that/which　

who/that　

which/that　

who　

whose