After losing contact for twenty years, they met again _________ in a party.
| A．by mistake | B．by coincidence |
| C．on purpose | D．on display |
The time _________ I first spend with Nelson Mandela was a very difficult period of my life.
| A． when | B． which | C． of which | D． at which |
The parks will also honor _________ who helped the survivors as well as who died in the terrible disaster.
| A． them. | B． those | C．ones | D．it |
---- Hello, mum, I’ve won the high school speaking competition about New Tangshan.
---- _________.
| A． All right | B． Congratulations |
| C． It’s a pleasure | D． Good luck |
Workers built shelter for survivors, _________ homes had been destroyed.
| A． which | B． whose | C． of whom | D． that |
In such a _________ night, the _________ people couldn’t fall into sleep.
| A． frightening; frightening | B． frightened ; frightening |
| C． frightening ; frightened | D． frightened ; frightened |