---___________?---He is a policeman.
He is _____ unusual writer. He can write _____ useful book.
---- I have very good grade in English this time .---- _______________!
I didn’t understand my parents why they are so strict ______ me ______ my schoolwork.
Both red and black represent _____ . But I prefer to wear red when I feel tired .
He devoted all his time he had _____ others.