---Look, the old man who is playing ________ guitar is ______ university teacher.---Oh, how nice the music is!
I think English is ______ useful language, and it’s also ______ important language.
____weather! It’s always raining!
Do you know the man_______ saved five people in the fire?
The old man was so_______ the good news that he couldn’t say a word.
_______ may have a chance to be successful if he tries his best.