Past Continuous vs Past Simple

Decide whether the Past Continuous or Past Simple should be used in each gap.

We _____ (go) down the road at 100 kph when the wheel ____ (fall) off  
He nearly _____ (have) a heart attack when he ______ (see) the bear.  
Uncle Ben _____ (get) dressed ___when he ____ (feel) a sharp pain in his chest.

The winning racing driver ____ (shake) the bottle then _____ (take) the cork out.

She ______ (fill) in a questionnaire when the pen _____ (run)out of ink.  

 

They ____ (watch) TV when the lights ____ (go) off.  

 

Mike ____ (not see) his friend because he ____ (face) the other way.