下列各句中，没有语病的一句是（ ）

It’s a top secret.–Yes, I see. I will keep it you and me.

What can we do to bird flu(流感) —Do not buy or eat ill chickens.

Does Wu Qiang study harder than Li Guang —_______. Li Guang studies harder.

The company designed a new car last month andabout 500 cars of this type inthe factory next month