明十三陵旅游攻略:their face are mixed,one big blur of approval ,disapproval ,sympathy adn malice

their face are mixed,one big blur of approval ,disapproval ,sympathy adn malice Are these their erasers? Their jobs are their life对吗? They are listening to their teacher 帮帮忙 How close parents are to their children Their cakes are to die for.是什么意思? Are these their erasers?这个句子变成单数句子还变their 吗？ The students are working together in their school The student teachers are now doing their teaching （practice）. 翻译：are talking about the surrounding of their houses.