（1）they,save,money,before they got married
     They had saved enough money before they got married。
（2）the girl,phone,a friend, before John came back
     The girl had phoned a friend before John came back。
  
（3）the boy,read,a novel,before the bell rang
     The boy had read a novel before the bell rang。
（4)we,listen to,music, before he called
     We had listen to music before he callde。
  
（5）I,write,letters,before they came to see me
     I had written letters before they came to see me。
（6）he said,he,rest,for two weeks
     He said he had rest for two weeks。
  
（7）John told me,they,do,a series of articles,on young people
     John told me they had done a series of articles on young people。
  
（8）the old man,feel,tired,because,he,draw,a picture,for t
wo hours 
     The old man felt tired because he had draw a picture for two hours。