[新知导引]
用适当的关系代词完成下面教材中的句子并体会它们的语法特征
1．There were deep cracks ________ appeared in the well walls.
2．Eleven kilometres directly below the city, one of the most deadly earthquakes of the 20th century had begun, a quake ________ even caused damage more than 150 kilometres away in Beijing.
3．Two thirds of the people ________ lived there were dead or injured.
4．The number of people ________ were killed or badly injured in the quake was more than 400,000.
5．Soon after the quakes, the army sent 150,000 soldiers to Tangshan to dig out those ________ were trapped and to bury the dead.
6．Workers built shelters for survivors ________ homes had been destroyed.
7．What kind of help do you think people ________ have suffered an earthquake need?
