Ⅰ. 用所给词的适当形式填空
1. The car race ________(hold)every two years.
2. Can pizza ________(eat)everywhere in the world?
3. The teenagers usually hold a big _________(celebrate)for their 16th birthday parties in the USA.
4. My English teacher is ________(help). With her help, I have made great progress in my English.
5. The __________(prepare)takes a long time and everything will look beautiful.
答案：1. is held 2. be eaten 3. celebration 4. helpful 5. preparation
