When I arrived at the station, I found the train _________ for passengers. 

—Why didn’t you go to yesterday’s meeting? —I would have but I ______too busy working on the important experiment.

 Let’s keep to the point, or we ______ any decisions.

The key you have just got     the front door. 

—Have you heard about the recent election?—Sure, it _______ the only thing on the news over the last three days.