Complete the sentence with the proper word in the box．

(用方框里的正确单词填空。)

1．Meeting my uncle after all these years was an unforgettable moment, ________ I will always treasure．

2．He never reads anything ________ is not worth reading．

3．________ is known to everybody, the moon travels round the earth once every month．

4．She spent the whole evening talking about the things and persons ________ none of us has ever heard of．

5．I have bought such a watch ________ was advertised on TV．

6．The doctor ________ you are looking for is in the room．

7．Those ________ want to go please sign their names here．

8．He lives in the room ________ window faces south．