When birds _______, they sometimes fly in formation.
举一反三
- Birds of a feather______together. A: flock B: fly C: cluste
- Birds learn to fly by _____ . A: preys B: instinct C: referees
- The word "laze" is an example of in word formation. A: acronym B: blending C: functional shift D: back formation
- Birds learn to fly by _____. A: referee B: prey C: instinct D: sporty
- when pigs fly