新提升·课时作业
Ⅰ.用适当的关系代词或副词填空
1.The time ________ I first met Nelson Mandela was a very difficult period of my life.
2.The band was very successful in the seventies, most of ________ members were in their twenties.
3.The school ________ I studied for only two years was three kilometres away.
4.However, this was a time ________ one had got to have a passbook to live in Johannesburg.