下列词语中加点的字，字音字形全都正确的一组是（ ）

My friends from the mainland to me that they find the city’s subway cars are “too old” compared with what they pay for subways in Beijing.

Who is it up ____ decide whether to go or not?

As you know, the group of Eight is an organization _____the richest countries in the world.

下列各句中，没有语病、句意明确的一项是 （ ）