根据汉语意思用英语完成句子，将答案写在横线上。

87．你不应该在教室里吸烟。

You are not ________ to ________ in the classroom．

71．Does “go for it” mean to try your best to be s _________．

70．China is one of the oldest c _________ in the world．

69．Xiao Ling is too young to make her own d _________．

68．Miss Wang really wants you to know the i _________ of education．