下列各句中，没有语病的一句是（ ）

The story is hard to understand, _____ there are no new words in it.

To take exercise indoors is less ________ than in the open air.[ ]

The spokesman of the government has announced that the UFO approaching the city has been _____ identified as being a satellite[ ]

Hurry upThe bus is coming— Oh, noWe mustn’t cross the street the traffic lights are green