Many birds are out of ____________ now, because we have done a lot of things to protect __________ birds.
The workers will build a new railroad______ the two cities.
Where is Class________ ? It’s on the ______ floor.
What do you usually have for________ breakfast? A piece of bread and ______ egg.
—Can you tell me ____ the prize, Tom? —Last year。
Today, computers are really helpful. They ____ everywhere.