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 79, He (do)________ his homework before he went to the cinema 80, By noon, I (wait)___________ for her for hours.

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