Mettez les verbes entre parenthèses à la forme du futur qui convient.
1) Solving London's housing crisis
(be) a difficult problem to solve when the
population
(hit) 10 million inhabitants in the next decade.
2) Because of the lack of land, the city
(extend) upwards with 455 skyscrapers
already planned.
3) Extending the city outwards means building on the “green belt”. Politicians
(hesitate) to choose this option because it is not considered to be environmentally-friendly.