Exercise 1: Give the correct form of the verb given in each following blank.
Question 1: The problem already (discuss)______by the board of directors when it was proposed again. Question 2: The building (build)______on waste land near the town since 2017 by contractors.
Question 3: Billions of dollars (spend)______on cancer research by the government last year.
Question 4: References (not use)______in the exam rooms.
Question 5: Ted (bite)______by a bee while he was sitting in the garden.
Question 6: The meeting (hold)______in this hall tomorrow.
Question 7: This house and these cars (paint)______for Christmas tonight by the Greens.
Question 8: I suggested the room (decorate)______before your mother’s birthday.
Question 9: There (say)______a number of reasons for the falloff of the Roman Empire. 
Question 10: When the old school friends met, a lot of happy memories (bring)______back.
Question 11: The bank is reported in the local newspaper (rob)______in broad daylight yesterday.
Question 12: The company’s travel budget (reduce)______substantially for the last two years.
Question 13: Understandably, her friends (surprise) ______when Julia married someone else after being engaged to John for two years.
Question 14: He currently (consider)______to be the best British athlete.
Question 15: The facsimile (send)______when the secretary returns from lunch.
Question 16: By the time I came here, all the better jobs (take)______.
Question 17: I don’t remember (tell)______of the decision to change the company policy on vacations. Question 18: It was announced that neither the passengers nor the driver (injure) ______in the crash.
Question 19: A buried treasure (believe)______to have been hidden in the tomb.
Question 20: The third team had the mission successfully (complete)______before the set time limit.