About at [2] before by [4] for from [3] on of [2] to [4] with

Ex.9. Fill in the blanks with the prepositions if necessary. Consult the box.

1) Their decision will depend ___ how interesting your offer is. 2) Steam locomotives were not able to haul very heavy trains ___ a high speed. 3) There were no means of direct communication ___ the telephone was invented. 4) He was invited ___ the conference but he didn't accept the invitation. 5) The fog prevented the planes ___ taking off. 6) The first passenger cars were lighted ___ candles; later candles were replaced ___ oil and gas lamps. 7) This new train develops a very high speed since it is equipped ___ powerful engines. 8) Steel which is used ___ the production ___ rails must be of high quality. 9) The incandescent lamp was invented ___ Thomas Edison. 10) There are a number ___ questions I'd like to speak ___ you ___. 11) The switch [стрелочный перевод] is the mechanism which is used to move the trains ___ one track ___ another. 12) The management of the Oktyabrskaya Railway pays much attention ___ the improvement of passengers’ service ___ the terminals 13) The railway station is an hour’s drive ___ my house. 14) The traffic in the city centre was delayed ___ the demonstration.