It is estimated that ，currently, about 50，000 species become _____every year ．
A、extinctA
暫無解析
Tomplacedthebanknotes，_________thechangeandreceipts，backinthedrawer．
John says that his present job does not provide him with enough ______for his organizing ability.
In1991，whilet11eeconomiesofindustrializedcountriesmetaneconomic_____，theeconomiesofdevelopingcountriesweregrowingveryfast．
The team played hard because the championship of the state was______.
Itisestimatedthat，currently,about50，000speciesbecome_____everyyear．
