摘要： The offspring of a pair of birds leave the nest when they are big enough to fly． A．children B．ancestors C．generations D．mates
网址：http://m.1010jiajiao.com/timu3_id_3053355[举报]
The offspring of a pair of birds leave the nest when they are big enough to fly.
- A.children
- B.ancestors
- C.generations
- D.mates