_______ is it from your home to school?— It’s five kilometers . [ ]

Jim wants to take part in the torch relay(火炬接力)of the 2012 Olympic Games.— ______.[ ]

It is ______ of a problem to be poor than to be dishonest.

There serious air pollution if people use more and more cars.

Mr. Smith has decided to his bad habit of smoking.—That’s good news. I hope he can do it.