I have a problem with the bold part of this paragraph:
Harmondsworth is under threat because London and southeastern England need more airport capacity to meet the growing demands of business travellers and tourists. Heathrow and Gatwick have offered competing projects. Whichever proposal is selected, homes will be destroyed and surviving neighbourhoods will have to cope with increased noise, pollution and traffic.
Why is the present tense used there? All we know that projects are offered, so I opted between "whichever proposal would be selected" or "whichever proposal will be selected", but "is selected" is supposed to be right (it was the "fill in the gaps" task).