用正确的介词填空.

用正确的介词填空.
1.Kate is one ------- the fastest girls in her class.
2.They talk -------- a long time.What are they talking -------?
3.Playing computers games too long is realy bad-------your eyes.
4.Don't stand too mear-------- the tiger cage,it's dangerous.
5.The moon looks--------- a plate in the sky.
6.We should try to do everything-------- ourselves.