68. John (watch) TV at 8 last evening.
69. Mr Pike (live) here since last October.
70. Someone (cut) down all the trees in the garden.
71. The house (build) two years ago.
72. Listen! The bird (sing).
73. Trees (plant) since it (stop) raining.
74. Tom Baker (not come) here tomorrow.
75. By the end of last March, I (study) English for 5 years.
76. He often (say) O.K when he (talk) with the guests.
77. What you (do) after you (go) home yesterday?
78. How long you (wait) for me? Just a few minutes.