用括号内单词的适当形式填空。 1. The children are very _____ (excite) when they get a lot of presents. 2. There are so many _____ (build) that I can't find the right place. 3. My shoes are _____ (wear) out. 4. Congratulations on crossing the channel _____ (success)! 5. He's _____ (see) the film many times before.