The old tower must be saved, _______ the cost.
There are many more advantages of buses______cars.
---How can you_____them_____the solar cars? ---Solar cars are getting better all the time.
Indeed,thanks to the good ideas of lots of people,like the cycling fans in the 1960s,many people around the world______the city centre streets without cars for many years.
_______a bicycle to use,you have to insert a special card.
Camp Xtreme is the biggest adventure camp in Scotland and has 15_____staff.