Bài tập : Join each pair of sentences using relative pronouns : 1 . The machine was broken . I hired it --> ....................................................... 2 . The clothes were beautiful . She bought some clothes --> ...................................................... 3. The wall fell down after three weeks . They built the wall -->......................................................... 4 . The policeman wasn't very helpful . I asked him --> .............................................................\ 5 . I didn't really like the car . We bought it --> ..................................................... 6. I lost the money . I borrowed it from John --> ................................................... 7 . She is the most intelligent woman . I've ever met this woman -->...................................................... 8 . This doctor is famous . You visited him yesterday --> ............................................... 9 . These children are orphans . She is taking care of these children -->...................................................... 10. My father goes swimming everyday . You met him this morning --> ............................................................. 11. The man is my father . I respect this man most --> ............................................................... 12. The man is my father . I respect his opinion most --> ........................................................... 13. The middle-aged man is the director . My father is talking to him --> ................................................. 14 . The boy is my cousin . You make fun of him -->.............................................. 15 . The studnet is from china . he sits next to me --> ................................................. 16 . I thanked the woman . This woman had helped me --> ...................................................