1£®Eleven kilometres directly below the city, one of the most deadly earthquakes of the 20th century had begun, a quake that/which even caused damage more than 150 kilometres away in Beijing.

2£®The number of people who/that were killed or badly injured in the quake was more than 400£¬000.

3£®Soon after the quakes, the army sent 150£¬000 soldiers to Tangshan to dig out those who were trapped and to bury the dead.

4£®Workers built shelters for survivors whose homes had been destroyed.

5£®The man (whom/who/that) I have to phone lives in Canada.