请用exciting / excited / tiring / tired填空

问题描述:

请用exciting / excited / tiring / tired填空
(1).Liu Xiang won a gold medal in 2004 Olympics.We Chinese are very _________.
(2).They watched a very ____________ basketball game yesterday evening.
(3).The ____________ meet lasted 2 hours.The students were very ____________.

excited,exciting,tiring,tired能否解释一下