The bus _______ at 8:30 p.m., so I have to be at the station by 8:10 at the latest.
She was good at physics _________she found it boring.
The experiment show that proper amount of exercise, if ________ regularly, can improve our health.
Listen! Do you hear someone _________ for help?
His first book ________ next month is based on a true story.
I’m not going to ________ their smoking any longer.