这只小猫实际上是雌性，不是雄性。

The kitten was actually a ___female, not a male.

女性占该国劳动力的40%。

___Females represent 40% of the country's workforce.

我们都知道把动物关在动物园里引发的问题：雌性动物会拒绝雄性。

We all know the problems caused by keeping animals in zoos: ___females refuse the males.