25.we have not lived in this area for 20 years
26.These teachers musn't use mobile phone...
28.My aunt started to be a director of this company when she was 25 yaers old.

25.we lived here 20 years ago
26.These teachers are not allowed to use phones when teaching
27.they often work hard in the fields
28.My aunt was a company director when she was 25 years old
 bạn làm nốt nhé chúc học tốt :33