____ I want to know is ____ I can master English in the shortest possible time.
Tom, look at your shirt! It requires ________.
I am concerned ____ it that I can’t concentrate ____ my work because of headache.
_____of danger in the street at night, she had to go home, with a friend_____ her.
—Jack is very clever and he studies hard as well. —It’s no ______ he always comes out first in the exams.
Autumn coming, down ________.