1) The old roof _____. a) has repaired b) has been repaired c) repaired 2) All the windows _____ . a) has been replaced b) have replaced c) have been replaced 3) A new bathroom _____ . a) have been built b) has been built c) has built 4) Central heating _____ . a) has been installed b) have been installed c) has installed 5) Nothing _____ yet. a) have been done b) have done c) has been done 6) Our classroom _____ . a) have been decorated. b) has been decorated c) has decorated 7) A lot of good work _____ by charities. a) has been done b) have been done c) have done 8) _____? There is no announcement on the departure board. a) Have the flight been canceled? b) Has the flight been canceled? c) Has the flight canceled? 

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