Shooting, as __________ means of survival originally, developed into _____ sport only in the late 19th century.
I don’t like to be interrupted if I_____.
I wonder if he_____us, and I think if he_____us we’ll be able to complete the task ahead of time.
You won’t succeed_____harder.
_____ weather permits, we’ll have an outing.
_____ you go , you should bear the motherland in your mind.