Make the sentences negative and interrogative. 1) She had prepared all the documents by four o’clock yesterday. 2) They had agreed about the delivery of the goods by the end of last week. 3) The scientists had predicted the flood long before. 4) Dolly had given first aid before the arrival of the ambulance. 5) Mr Franks had read the report by five o’clock yesterday. 6) Daniel had received the driving licence some years before. 7) We had arranged the conference before last Friday. 8) You had answered all the letters by two o’clock yesterday. 9) Nick had studied French a year before. 10) Julia had completed her test half an hour before the end.