自然保护区的内部布局，一般分为______区、缓冲区和______一区三个部分。
"Lookwhatyou'vedone!You______morecareful."
Youcantakeanyseat____isfree.
Abusinessmeetingagendaisplan__abusinessmeeting.
Sheheardaterriblenoise,____broughtherheartintohermouth.
Browsing______theclassifiedadsandapplyingforeveryjobyoufindisnotenough.
