A __________ program on TV is calling on people to donate money or other things to the people who have suffered from the flood in Henan Province.
I am sorry I can’t spare any paper for you, for, you see, I have _____ myself.
Obama was elected ____ first black president of the United States four years ago and has been elected _____ president again for the next four years.
Can you tell the _____ difference between the words “require” and “ request”? I sometimes get puzzled by their meanings.
The old man sat in front of the television every evening, happy______ anything that happened to be on.
---Did you ask Sophia for help? ----I ______ need to- I managed perfectly well on my own.