Better _____ all the lights are turned off before you leave the classroom.
—I want to go to the library but I am afraid I am not in the right . —_____. Go ahead.
—Would you rather come on Friday or Saturday? —_____.
—Did you look up the time of trains to Shanghai? —Yes, the earliest train is_____to leave at 5:30 am.
She stepped into the bedroom quietly_____she might wake up her roommates.
Many people have been ill from a strange disease these days,_____ we’ve never heard of before.