根据句意和汉语注释,写出单词的正确形式.
____ The government has________________(意识到)the importance of protecting the environment.
____ He was ten minutes late for the _________________(大型会议) last Friday.
____ The charity show had lots of support from local ________________ (企业).
____ Usually the capital city is the _________________ (文化) centre of that country.
____ If you answer a question _______________ (错误), you will lose a point .

（cos$\frac{\mathrm{\pi }}{12}$-sin$\frac{\mathrm{\pi }}{12}$）（cos$\frac{\mathrm{\pi }}{12}$+sin$\frac{\mathrm{\pi }}{12}$）=____