It is estimated that ，currently, about 50，000 species become _____every year ．
A、extinctA
暂无解析
TheopportunitytoexploreandplayandtheencouragementtodosoCan________theperformanceofmanychildren．
The destruction of the twin towers _________shock and anger throughout the world ．
Many _______will be opened up in the future for those with a university education ．
Tom placed the bank notes ，_________the change and receipts ，back in the drawer ．
We aim to ensure that all candidates are treated fairly and that they have equal______to employment opportunities ．
