Chia động từ trong ngoặc: My teacher wasn't at home when I (arrive) ... He (just go) ... out. b) My father (not smoke) ... for 5 years

61. My teacher wasn't at home when I ( arrive ) .................He ( just go ) .........out.
62. My father ( not smoke ) ...............for 5 years.
63.I ( lose ) ............my key . Can you help me look  for it ?
64. Birds ( build ).........their nests in the summer and ( fly )............ to the south in winter.
65. I'm busy at the moment . I ( redecorate ) ............... the sitting room.
66. I aways ( buy ).................lottery tickets but I never ( win ) ..............anything.
67. I ( work ) .............for him for 10 years and he never once ( say )...................." good morning " to me.
68. I ( teach ) ..............hundreds of students but I never ( meet )...........such a hopeless.
69. This time next month I ( sit ) ................on a beach.
70. I'm sure that I ( recognize ) ................him