请你用所给单词的适当形式填空。
1.Teenagers should ________ to choose their own clothes. (allow)
2.I think it's wrong to get our ears _________ when we are at school. (pierce)
3.Have you made a ________ to buy an MP4? (decide)
4.You must pay attention to your _________. (pronounce)
5.I am very ________ of my head teacher. (terrify)