--I am a little hungry, Mom.--There are some cakes on the plate. You can take ________.
—Will there be more roads in the future? —_____.Then people will get somewhere easily.
Everyone in our class played a part _________ our next trip.
— Do you like this MP3 player, Tom? — Yes. It can play beautiful music, ______ it’s very expensive.
The earth is our home. I hope there will be more trees and ____ pollution.
The teacher is ______ Tony, because he often sleeps in class.