Old Mr. Black lives happily with his three dogs. of them are part of his family.
He is__________ outgoing student from _________ university in America.
— Could you tell me ____ ? — Certainly. In half an hour.
Success will belong to those ___ never say “impossible”.
It is said that ____ young people may lose the abilities to hear after five years if they listen to MP4 players which are too loud for more than five hours a week.
CCTV-10 often plays _____ around the world . It can help us learn more about not only nature but also different cultures and customs.