6．We seemed to be able to see for miles at one point．(用it作形式主语改写)

___28_____ ___29_______ ___30_______ we were able to see for miles at one point．

5．He prefers riding a bicycle to riding on a crowded bus．((写出同义句)

____25____ ___26_____ _____27____ on a crowded bus, he prefers to ride a bicycle．

4．All hope was not lost．(写出同义句)

___22____ ____23____ ___24_____ was lost．

3．It was a very difficult period of my life．At that time I first met Nelson Mandela． (连成一定语从句)

_____19____ ____20______ ___21_______ I first met Nelson Mandela was a very difficult period of my life．

2．My mother said to me: “Come back before 10．” (改成间接引语)

My mother ___15____ me ___16________17______ ___18______ before 10．

1．She asked me whether I had seen him the night before．(改成直接引语)

She asked, “___11_____ ____12____ see him ____13_____ ___14_____?”