1) My brother has been doing his homework since 8 o'clock. --> My brother ........................... 2) He started working for this factory a year ago. -->He has ........................................ 3)Tom began playing the piano 4 years ago. -->Tom has ................................ 4)My sister began to study English a year ago. -->My sister .................................... 5)My father is reading a newspaper . He started 2 hours ago. -->My father has ..................................... 6)She has been working as a secretary for 4 year. -->She .............................................. 7)I started working in this hotel six months ago. -->...................................................... 8)He started working as a teacher five years ago. -->.............................................. (Mong moị người giải dùm mjh với ạ )